JP2019521556A - Method for transmitting and receiving information, user equipment and base station - Google Patents

Abstract

Embodiments of the present invention disclose a method, user equipment and base station for transmitting and receiving information to better support dynamic TDD and maintain forward compatibility. A method in an embodiment of the present invention includes a step of determining a position of a reference signal by a first device, and transmitting or receiving a reference signal based on the determined position of the reference signal by a first device. Including.

Description

[Cross-reference to related applications]
This application claims the priority of Chinese patent application CN201610309302.6 named “METHOD FOR TRANSMITTING AND RECEIVING INFORMATION, USER EQUIPMENT, AND BASE STATION” filed with the Chinese Patent Office on May 11, 2016. , The entire contents of which are incorporated by reference.

[Technical field]
This application relates to the field of communication technology, in particular to a method, user equipment and base station for transmitting and receiving information.

  The 5th generation mobile communication technology (English full name: 5-Generation, abbreviated as 5G) communication system is dedicated to supporting higher system performance. The 5G communication system supports different services, different deployment scenarios and different spectra. The different services include Enhanced Mobile Broadband (English full name: eMBB), Machine Type Communication (English full name: Machine Type Communication (MTC), ultra-reliable and low latency communication (English full name: Ultra). -Reliable and low latency communications (abbreviation: URLLC), multimedia broadcast multicast service (English full name: Multimedia Broadcast Multicast Service (abbreviation: MBMS)), positioning, etc. are included. Different deployment scenarios include indoor hotspots, dense urban areas, suburban areas, urban macro coverage, high-speed railway scenarios, etc. 5G supports the spectral range up to 100 GHz. Dynamic time division duplex (full name: Time Division Duplex, abbreviation: TDD) is an important technology in 5G communication systems. Dynamic TDD better matches the real time service requirements by dynamically adjusting the transmission direction of subframes, improves the spectrum efficiency of the communication system, and better meets the requirements of low delay service. The 5G communication system design needs to enable better application of dynamic TDD. The 5G communication system needs to support forward compatibility. Specifically, the 5G communication system can flexibly allow the introduction of future unknown functions, and user equipment supporting only the design of existing 5G communication systems can still operate under the system with unknown functions . The 5G communication system design needs to support forward compatibility.

  Because research on 5G communication systems is just beginning, methods for designing channels and signals that can support dynamic TDD better and maintain forward compatibility under 5G communication systems are prior art Not currently available at

  Embodiments of the present invention provide a method, user equipment and base station for transmitting and receiving information to better support dynamic TDD and maintain forward compatibility.

In view of this, a first aspect of the present invention provides a method for transmitting and receiving information, the method comprising
Determining the position of the reference signal by the first device;
Transmitting or receiving a reference signal by the first device based on the determined position of the reference signal.

  Here, the first device may be a user equipment or a base station. The reference signal may include a first reference signal and a second reference signal, the first reference signal may be referred to as a first demodulation reference signal DMRS, and the second reference signal is a second reference signal. May be called a demodulation reference signal DMRS. The first reference signal may be used for uplink data demodulation and the second reference signal may be used for downlink data demodulation. The position of the first reference signal (time domain position and / or frequency domain position) may be the same as the position of the second reference signal (time domain position and / or frequency domain position).

  Furthermore, if the position of the first reference signal (time domain position and / or frequency domain position) is the same as the position of the second reference signal (time domain position and / or frequency domain position), the first device is , Perform better uplink downlink interference estimation by using the first reference signal and the second reference signal, and thus perform better uplink downlink interference cancellation, and thereby better TDD Can be used to better match the actual service, improve the spectral efficiency of the system, and provide a better low latency service.

  In some possible implementations, the reference signal includes a first reference signal and a second reference signal, and the step of determining the position of the reference signal by the first device is performed by the first device. Determining the position of the one reference signal, the first reference signal being used for downlink data demodulation, and determining the position of the second reference signal by the first device. And the second reference signal is used for uplink data demodulation.

  Optionally, whether the first device receives the first reference signal based on the position of the first reference signal and transmits the second reference signal based on the position of the second reference signal Alternatively, the first device transmits the second reference signal based on the position of the first reference signal, and receives the second reference signal based on the position of the second reference signal.

  The time domain position of the first reference signal is the same as the time domain position of the second reference signal.

  Further, based on the determined position of the first reference signal and the position of the second reference signal, the first device transmits the first reference signal and receives the second reference signal, or A first reference signal is received and a second reference signal is transmitted.

  In another possible implementation, the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

  In another possible implementation, the first reference signal is carried in the first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit , The second reference signal is conveyed in the second transmission unit, the position of the second reference signal is the position of the second reference signal in the second transmission unit, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is specifically the second in the second transmission unit. The same as the time domain position of the two reference signals, and the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit.

  Furthermore, the transmission direction of the transmission unit may change dynamically in the dynamic TDD scheme, ie the transmission unit may be applied dynamically for uplink data transmission or downlink data transmission, so it is better Can match current service requirements.

  In another possible implementation, the first reference signal is carried in the first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit , The second reference signal is conveyed in the second transmission unit, the position of the second reference signal is the position of the second reference signal in the second transmission unit, and the first reference signal is The fact that the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is the same as that of the second reference signal in the second transmission unit. The same as the time domain position, and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal, in the first reference signal in the first transmission unit. The frequency domain position is the frequency domain position of the second reference signal in the second transmission unit and And that Flip is the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit.

  Furthermore, the transmission direction of subframes may change dynamically in a dynamic TDD scheme, ie it may be applied dynamically to subframes, uplink data transmission or downlink data transmission, so it is better now Can match the service requirements of

  In another possible implementation, the first reference signal is located on the third symbol in the first transmission unit and the second reference signal is on the third symbol in the second transmission unit. Located in

  In the present invention, the symbols may be time domain symbols, for example, single-carrier frequency division multiple access (abbreviation: SC-FDMA) symbols, or orthogonal frequency division multiplexing. Full name: Orthogonal Frequency Division Multiplexing (abbreviation: OFDM) symbol may be used.

  In another possible implementation, the first reference signal is carried in the first subframe and the position of the first reference signal is the position of the first reference signal in the first subframe , The second reference signal is carried in the second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is the same as that of the second reference signal in the second subframe. The same as in the time domain position, the number of symbols used for downlink transmission in the first subframe is greater than the number of symbols used for uplink transmission in the first subframe, the second Used for downlink transmission within a subframe of That the number of symbols is less than the number of symbols used for uplink transmission in a second subframe.

  In another possible implementation, the first reference signal is carried in the first subframe and the position of the first reference signal is the position of the first reference signal in the first subframe , The second reference signal is carried in the second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is the same as that of the second reference signal in the second subframe. The same as the time domain position, and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal, in the first reference signal in the first subframe. The frequency domain position is the second in the second subframe The same as the frequency domain position of the reference signal, and the number of symbols used for downlink transmission in the first subframe is greater than the number of symbols used for uplink transmission in the first subframe The number of symbols used for downlink transmission in the second subframe is less than the number of symbols used for uplink transmission in the second subframe.

  In another possible implementation scheme, the first subframe includes symbols used for downlink transmission, a guard period GP, and symbols used for uplink transmission, and is included in the first subframe. And, uplink transmission corresponding to a symbol used for uplink transmission includes hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and is included in the first subframe and corresponds to a symbol used for downlink transmission The downlink transmission includes downlink control transmission, downlink data transmission, and transmission of a first reference signal, and the second subframe is a symbol used for downlink transmission, a guard period GP, Downlink transmissions corresponding to the symbols included in the second subframe and used for downlink transmission, including symbols used for uplink transmission, are Uplink transmission, including link control transmission, corresponding to a symbol included in the second subframe and used for uplink transmission, includes uplink control transmission, uplink data transmission, and transmission of a second reference signal And.

  In another possible implementation scheme, the first subframe starts with the symbols contained in the first subframe and used for downlink transmission, is contained in the first subframe and used for uplink transmission And the second subframe starts with a symbol included in the second subframe and used for downlink transmission, and is a symbol included in the second subframe and used for uplink transmission. It is over.

  In another possible implementation scheme, it is specific that the time domain position of the first reference signal in the first subframe is the same as the time domain position of the second reference signal in the second subframe. The index of the symbol occupied by the first reference signal in the first subframe is the same as the index of the symbol occupied by the second reference signal in the second subframe.

  In another possible implementation scheme, the first reference signal is located on the third symbol in the first subframe and the second reference signal is on the third symbol in the second subframe. Located in

  In another possible implementation manner, the first device is a user equipment and the step of transmitting or receiving the reference signal by the first device based on the determined position of the reference signal is performed by the user equipment Receiving the first reference signal based on the position of the one reference signal; and transmitting the second reference signal based on the position of the second reference signal by the user equipment.

In another possible implementation scheme, the first device is a base station, and transmitting or receiving a reference signal by the first device based on the determined position of the reference signal
Transmitting the first reference signal by the base station based on the position of the first reference signal;
Receiving by the base station a second reference signal based on the position of the second reference signal.

A second aspect of the invention provides a method for receiving information, the method comprising
Determining the time frequency resource of the control channel by the user equipment;
Receiving, by the user equipment, downlink control information based on time frequency resources of the control channel.

  In some possible implementations, the steps of determining the time frequency resource of the control channel by the user equipment, and receiving the downlink control information by the user equipment based on the time frequency resource of the control channel comprises: The apparatus determines the time frequency resource of the first control channel, the user apparatus determines the time frequency resource of the second control channel, and the user apparatus detects the time frequency resource of the first control channel. And detecting the second downlink control information based on the time frequency resource of the second control channel by the user equipment.

  In another possible implementation scheme, the symbols occupied by the time frequency resource of the first control channel are located before the symbols occupied by the time frequency resource of the second control channel.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time frequency resource of the second control channel starts with the symbol l _{i + k} , k is a positive integer greater than or equal 1 and the symbols l _i to l _{i + k−1} transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time-frequency resource of the second control channel starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second The control channel and downlink data are multiplexed on the time frequency resource corresponding to the symbol after symbol l _{i -1} .

  In another possible implementation scheme, the step of determining the time frequency resource of the first control channel by the user equipment and the step of determining the time frequency resource of the second control channel by the user equipment are performed by the user equipment Determining the time frequency resource of the first control channel in the first subframe, and determining the time frequency resource of the second control channel in the first subframe by the user equipment, The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission The uplink transmission corresponding to the symbol includes a hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and the first subframe Downlink transmission corresponding to a symbol included in and used for downlink transmission includes downlink control transmission, downlink data transmission, and transmission of a first reference signal, and is included in a first subframe. The symbols used for downlink transmission include a symbol occupied by the time frequency resource of the first control channel and a symbol occupied by the time frequency resource of the second control channel.

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel begins with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 And the (i + 1) th symbol to the (i + k) th symbol in the first subframe are used to transmit a reference signal, the reference signal being a second positive integer It is used to demodulate the control channel and / or data, and the (l-k1) th to lth symbols in the first subframe are used for uplink transmission in the first subframe Symbols, l is the number of symbols included in the first subframe, and k1 is one or more positive Is an integer of

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe or the second control The time frequency resource of the channel is located on the symbol after the ith symbol in the first subframe, and the second control channel and downlink data are from the ith symbol in the first subframe Multiplexed on a time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and (i + k2 +) in the first subframe The symbol of 1) is the guard period in the first subframe And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the 1st symbol The number of symbols included in the subframe of

In another possible implementation scheme, the steps of determining the time frequency resource of the first control channel by the user equipment and determining the time frequency resource of the second control channel by the user equipment,
Determining by the user equipment the time frequency resource of the first control channel in the second subframe;
Determining by the user equipment that the time frequency resource of the second control channel is not present in the second subframe, the second subframe being a symbol used for downlink transmission and a guard period Downlink transmissions corresponding to symbols included in the second subframe and used for downlink transmission, including GP and symbols used for uplink transmission, include downlink control transmissions, and the second The uplink transmission corresponding to the symbol included in the subframe and used for uplink transmission includes transmission of a second reference signal, uplink data transmission, and uplink control transmission.

  In another possible implementation, the symbol contained in the second subframe and used for downlink transmission is the first symbol in the second subframe and the time frequency resource of the first control channel Occupies the first symbol in the second subframe.

  In another possible implementation scheme, the step of determining the time frequency resource of the second control channel by the user equipment may be performed by the user equipment according to the first downlink control information, the time frequency resources of the second control channel. Including the step of determining.

  In another possible implementation, the first downlink control information is carried in sub-frame n and the second control channel is carried in sub-frame n or the first downlink control information Are carried in subframe n, the second control channel is carried in subframe n + 1, and n is a positive integer.

  In another possible implementation manner, the method further comprises the step of receiving, by the user equipment, the downlink shared channel according to the first downlink control information and the second downlink control information, the first downlink control The information includes information on time frequency resources of the second downlink control channel and / or information on time frequency resources of the downlink shared channel, and the second downlink control information includes modulation of the downlink shared channel and Contains coding information.

  In another possible implementation, the first control channel is demodulated according to the reference signal carried on the time frequency resource of the first control channel.

  In another possible implementation scheme, the step of determining the time frequency resource of the control channel by the user equipment comprises: determining the time frequency resource of the control channel in subframe n by the user equipment; When belonging to frame set 1, the step of determining the time frequency resource of the control channel in subframe n according to the rule set in advance by the user equipment, or when subframe n belongs to subframe set 2, by the user equipment Determining the time frequency resources of the control channel in subframe n according to downlink control signaling, subframe set 1 includes subframes carrying synchronization signals and / or system information, subframe set 2 is a synchronization signal and / or system information Excluding sub-frames carrying, n represents an integer of 0 or more.

  In another possible implementation scheme, the step of determining the time frequency resource of the control channel in subframe n according to the downlink control signaling by the user equipment comprises: downlink control carried in subframe nk by the user equipment Determining the time frequency resource of the control channel in subframe n according to the signaling, where k is an integer greater than or equal to 0.

  For example, if the value of k is 1, the user equipment determines the time frequency resource of the control channel in subframe n according to the downlink control signaling carried in subframe n-1. Subframe nk may represent the kth subframe counted from subframe n forward, and subframe nk and subframe n may be in the same radio frame or not in the same radio frame. It should be noted that it may be. Subframe nk and subframe n are in two adjacent radio frames if they are not in the same radio frame. Here, downlink control signaling may be downlink control information or information carried in a downlink control information format.

  In another possible implementation scheme, the step of determining, by the user equipment according to the downlink control signaling, the time frequency resource of the control channel in subframe n is performed by the user equipment in downlink carried in subframe n-1. Determining the time frequency resource of the control channel in subframe n according to link control signaling.

  In another possible implementation, the time frequency resource of the control channel in subframe n occupies two symbols in the time domain.

  In another possible implementation scheme, the control channel includes control channel set 1 and the step of determining the time frequency resource of the control channel by the user equipment determines the time frequency resource of the control channel set 1 by the user equipment The control channel in control channel set 1 uses a distributed transmission mode, including steps.

  Here, when the control channel uses the distributed transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean that it is distributed over time frequency resources. For example, specifically, resource element groups corresponding to control channels carrying downlink control information DCI format are distributed over time frequency resources of the control channels. Because the control channel is transmitted in distributed mode, more diversity gain can be obtained and the performance of the control channel is improved.

  In another possible implementation scheme, the control channel includes control channel set 1 and control channel set 2 and the step of determining the time frequency resource of the control channel by the user equipment comprises: controlling the time of control channel set 1 by the user equipment The steps of determining frequency resources and determining time frequency resources of control channel set 2 by the user equipment, the control channels in control channel set 1 using the distributed transmission mode, control channel set 2 The control channel within uses the localized transmission mode.

  Here, when the control channel uses the localized transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean to be localized on time frequency resources. For example, specifically, a resource element group corresponding to a control channel carrying downlink control information DCI format is localized on a part of time frequency resources of the control channel. Since the control channel is transmitted in localized mode, beamforming transmission mode can be used, the control channel is concentrated in the corresponding beam direction, and the control channel coverage is improved. Furthermore, localized transmission allows the user to combine reference signals on localized resources to perform channel estimation, which improves the performance of channel estimation and control channel based on beam transmission mode Performance is improved.

  In another possible implementation scheme, the step of determining the time frequency resource of control channel set 1 by the user equipment comprises: detecting downlink control information in subframe n by the user equipment; Determining the time-frequency resource of control channel set 1 in subframe n + k according to the downlink control information detected in frame n, where n is an integer and k is a positive integer greater than or equal to 1 And include steps. In another possible implementation, the method causes the user equipment to set the time frequency resources of control channel set 2 in subframe n + k based on the time frequency resources of control channel set 1 in subframe n + k. It further comprises the step of determining.

  In another possible implementation scheme, the sub-frames carrying the control channel do not carry synchronization signals and / or system information.

  In another possible implementation scheme, the step of determining time-frequency resources of the control channel by the user equipment comprises: determining, by the user equipment, time-frequency resources of the basic set of control channels; And detecting the downlink control information based on the time frequency resource, and determining the time frequency resource of the extended set of control channels according to the detected downlink control information by the user equipment.

  In another possible implementation scheme, the step of determining the time-frequency resource of the basic set of control channels by the user equipment comprises: receiving system information by the user equipment; and by the user equipment according to the system information of the control channels. Determining a basic set of time frequency resources.

  In another possible implementation scheme, the step of determining the time-frequency resource of the basic set of control channels according to the system information by the user equipment is occupied by the time-frequency resources of the basic set of control channels according to the system information by the user equipment. Determining the number of symbols to be assigned, or by the user equipment according to the system information, determining the number of physical resource blocks occupied by the time frequency resource of the basic set of control channels, or by the user equipment according to the system information Determining the number of control channel elements CCE corresponding to the time frequency resources of the basic set of channels.

  In another possible implementation scheme, the step of determining the time-frequency resources of the basic set of control channels by the user equipment is determined by the user equipment according to preset rules the time-frequency resources of the basic set of control channels Including steps.

  In another possible implementation scheme, the preset rule is that the time frequency resources of the basic set of control channels occupy one symbol.

  In another possible implementation scheme, the step of determining the time-frequency resource of the basic set of control channels by the user equipment comprises: receiving system information by the user equipment; and by the user equipment according to the system information of the control channels. Determining the number of physical resource blocks occupied by the basic set of time frequency resources, or the number of control channel elements corresponding to the time frequency resources of the basic set of control channels, and controlling according to rules predefined by the user equipment Determining the number of symbols occupied by the channel time frequency resource, wherein the predefined rule is that the number of symbols occupied by the control channel time frequency resource is a fixed value, or the time of the control channel Occupied by frequency resources That the number of symbols is a predetermined value, for example, it may also be two symbols.

  In another possible implementation scheme, the step of detecting downlink control information by the user equipment based on the basic set of time frequency resources, and the extended set of control channels according to the downlink control information detected by the user equipment The step of determining the time-frequency resource of is performed by the user equipment detecting downlink control information based on the basic set of time-frequency resources in subframe n; and the user equipment is detected in subframe n Determining the time frequency resources of the extended set of control channels in subframe n + k according to the downlink control information, where n is an integer and k is a positive integer greater than or equal to 0. Including. Optionally, the value of k is equal to one.

  In another possible implementation scheme, the method comprises, by the user equipment, determining whether an extended set of control channels is present according to the detected downlink control information, or the downlink detected by the user equipment. The method further comprises determining a transmission mode corresponding to the extended set of control channels according to the control information.

  In another possible implementation, the basic set is present in all subframes containing the symbols used for downlink transmission.

  In another possible implementation, the extension set is not present in subframes carrying synchronization signals and / or system information.

A third aspect of the invention provides a method for transmitting information, the method comprising
Determining the time frequency resource of the control channel by the base station;
Transmitting, by the base station, downlink control information based on the time frequency resource of the control channel.

  In some possible implementations, the step of determining the time frequency resource of the control channel by the base station, and the step of transmitting the downlink control information by the base station based on the time frequency resource of the control channel comprises Determining the time frequency resource of the first control channel by the station; determining the time frequency resource of the second control channel by the base station; and selecting the time frequency resource of the first control channel by the base station. Transmitting the first downlink control information, and transmitting the second downlink control information by the base station based on the time frequency resource of the second control channel.

  In another possible implementation scheme, the symbols occupied by the time frequency resource of the first control channel are located before the symbols occupied by the time frequency resource of the second control channel.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time frequency resource of the second control channel starts with the symbol l _{i + k} , k is a positive integer greater than or equal 1 and the symbols l _i to l _{i + k−1} transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time-frequency resource of the second control channel starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second The control channel and downlink data are multiplexed on the time frequency resource corresponding to the symbol after symbol l _{i -1} .

  In another possible implementation scheme, the step of determining the time frequency resource of the first control channel by the base station and the step of determining the time frequency resource of the second control channel by the base station are performed by the base station Determining the time frequency resource of the first control channel in the first subframe, and determining the time frequency resource of the second control channel in the first subframe by the base station, The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission The uplink transmissions corresponding to the symbols include hybrid automatic retransmission request acknowledgment ACK-ACK transmissions, included in the first subframe and downlinked. The downlink transmission corresponding to the symbol used for link transmission includes downlink control transmission, downlink data transmission, and transmission of the first reference signal, is included in the first subframe, and is downlink transmission The symbols used for H include the symbols occupied by the time frequency resource of the first control channel and the symbols occupied by the time frequency resource of the second control channel.

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel begins with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 And the (i + 1) th symbol to the (i + k) th symbol in the first subframe are used to transmit a reference signal, the reference signal being a second positive integer It is used to demodulate the control channel and / or data, and the (l-k1) th to lth symbols in the first subframe are used for uplink transmission in the first subframe Symbols, l is the number of symbols included in the first subframe, and k1 is one or more positive Is an integer of

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe or the second control The time frequency resource of the channel is located on the symbol after the ith symbol in the first subframe, and the second control channel and downlink data are from the ith symbol in the first subframe Multiplexed on a time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and (i + k2 +) in the first subframe The symbol of 1) is the guard period in the first subframe And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the 1st symbol The number of symbols included in the subframe of

  In another possible implementation scheme, the step of determining the time frequency resource of the first control channel by the base station and the step of determining the time frequency resource of the second control channel by the base station are performed by the base station Determining time-frequency resources of a first control channel in a second subframe; determining by the base station that time-frequency resources of the second control channel are not present in a second subframe And the second subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, is included in the second subframe and is included in the downlink transmission. The downlink transmissions corresponding to the symbols used include downlink control transmission, included in the second subframe and uplink transmissions Uplink transmission corresponding to the symbol to be used include a transmission of the second reference signal, an uplink data transmission, the uplink control transmission.

  In another possible implementation, the symbol contained in the second subframe and used for downlink transmission is the first symbol in the second subframe and the time frequency resource of the first control channel Occupies the first symbol in the second subframe.

  In another possible implementation scheme, the first downlink control information comprises information on time frequency resources of the second control channel.

  In another possible implementation, the first downlink control information is carried in sub-frame n and the second control channel is carried in sub-frame n or the first downlink control information Are carried in subframe n, the second control channel is carried in subframe n + 1, and n is a positive integer.

  In another possible implementation, the method further comprises the step of transmitting by the base station the downlink shared channel, the first downlink control information comprising information on time frequency resources of the second downlink control channel. And / or information on time and frequency resources of the downlink shared channel, and the second downlink control information includes modulation and coding information on the downlink shared channel.

  In another possible implementation, the method is the step of transmitting by the base station a reference signal on the time frequency resource of the first control channel, the reference signal being used to demodulate the first control channel Further includes the step of

  In another possible implementation, the method is the step of transmitting downlink control signaling by the base station, wherein the downlink control signaling is used to determine the time frequency resource of the control channel in subframe n , Subframe n does not carry synchronization signals and / or system information, and n is an integer greater than or equal to 0.

  In another possible implementation scheme, the step of transmitting the downlink control information signaling by the base station is a step of transmitting the downlink control signaling in the subframe nk by the base station, where k is an integer greater than or equal to 0. There are steps included. Optionally, k is equal to one.

  In another possible implementation scheme, the step of determining the time frequency resource of the control channel by the base station comprises the step of determining the time frequency resource of the control channel in subframe n according to a predefined rule by the base station And subframe n carries synchronization signals and / or system information. The predefined rule is that the number of symbols occupied by the control channel time frequency resource is a fixed value, or a value in which the number of symbols occupied by the control channel time frequency resource is preset, eg, two It may be a symbol.

  In another possible implementation, the control channel includes control channel set 1, and the step of determining the time frequency resource of the control channel by the base station determines the time frequency resource of the control channel set 1 by the base station The method further comprises the steps of transmitting the control channel based on the time frequency resource of control channel set 1 by using a distributed transmission mode by the base station.

  In another possible implementation, the control channel comprises control channel set 1 and control channel set 2 and the step of determining the time frequency resource of the control channel by the base station is performed by the base station time of control channel set 1 The steps of determining frequency resources and determining time frequency resources of control channel set 2 by the base station, wherein the control channels in control channel set 1 use the distributed transmission mode and control channel set 2 The control channel within uses the localized transmission mode.

  In another possible implementation, the method is the step of transmitting the downlink control information in subframe n by the base station, the downlink control information is the time of control channel set 1 in subframe n + k The method further includes a step including information on frequency resources, n is an integer, and k is a positive integer of 1 or more.

  In another possible implementation scheme, the step of determining the time frequency resource of the control channel by the base station and the step of transmitting the downlink control information by the base station based on the time frequency resource of the control channel are performed by the base station Determining the time-frequency resources of the basic set of control channels, and transmitting downlink control information by the base station based on the time-frequency resources of the basic set, the downlink control information being And C. including information about the time-frequency resource of the extension set.

  In another possible implementation, the method further comprises the step of transmitting system information by the base station, the system information including information on time frequency resources of a basic set of control channels.

  In another possible realization that the system information comprises information about time frequency resources of the basic set of control channels, in particular, the symbols in which the system information is occupied by time frequency resources of the basic set of control channels The information about the number is included, or the system information includes the number of physical resource blocks occupied by the time frequency resources of the basic set of control channels, or the system information is occupied by the time frequency resources of the basic set of control channels Including information on the number of physical resource blocks, or system information including information on the number of resource block pairs occupied by time-frequency resources of the basic set of control channels, or system information time of the basic set of control channels Space resource by frequency resource It includes information about the number of subcarriers, or the system information is to include information about the control channel element CCE number corresponding to the time-frequency resources of the basic set of control channels.

  In another possible implementation scheme, the step of determining the time frequency resources of the basic set of control channels by the base station is determined by the base station according to a preset rule, the time frequency resources of the basic set of control channels Including steps.

  In another possible implementation scheme, the preset rule is that the time frequency resources of the basic set of control channels occupy one symbol.

  Another possible implementation is to transmit the downlink control information by the base station based on a basic set of time frequency resources, wherein the downlink control information is for the time frequency resources of the extended set of control channels. The step of including information is a step of transmitting downlink control information by the base station based on a basic set of time frequency resources in subframe n, the downlink control information being in subframe n + k Including steps for information about time frequency resources of the extended set of control channels, n being an integer and k being a positive integer greater than or equal to zero. Optionally, the value of k is equal to one.

  In another possible implementation scheme, the downlink control information may include information indicating whether or not an extended set of control channels exists, or the downlink control information may indicate a transmission mode corresponding to the extended set of control channels. Contains the information shown.

  In another possible implementation, the basic set is present in all subframes containing the symbols used for downlink transmission.

  In another possible implementation, the extension set is not present in subframes carrying synchronization signals and / or system information.

A fourth aspect of the invention provides a device for use as a first device,
A determination module configured to determine the position of the reference signal;
And a transceiver module configured to transmit or receive the reference signal based on the determined position of the reference signal.

  In some possible implementations, the reference signal comprises a first reference signal and a second reference signal, the determination module determines the position of the first reference signal and the first reference signal is downstream The link data demodulation is used to determine the position of the second reference signal, the second reference signal is used for uplink data demodulation, and the time domain position of the first reference signal is of the second reference signal. It is specifically configured to be the same as the time domain position.

  Optionally, the transceiver module receives the first reference signal based on the position of the first reference signal and transmits the second reference signal based on the position of the second reference signal. Specifically configured or the first device transmits a second reference signal based on the position of the first reference signal, and the second reference based on the position of the second reference signal Receive a signal.

  In another possible implementation, the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

  In another possible implementation, the first reference signal is carried in the first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit , The second reference signal is conveyed in the second transmission unit, the position of the second reference signal is the position of the second reference signal in the second transmission unit, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is specifically the second in the second transmission unit. The same as the time domain position of the two reference signals, and the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit.

  In another possible implementation, the first reference signal is carried in the first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit , The second reference signal is conveyed in the second transmission unit, the position of the second reference signal is the position of the second reference signal in the second transmission unit, and the first reference signal is The fact that the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is the same as that of the second reference signal in the second transmission unit. The same as the time domain position, and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal, in the first reference signal in the first transmission unit. The frequency domain position is the frequency domain position of the second reference signal in the second transmission unit and And that Flip is the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit.

  In another possible implementation, the first reference signal is located on the third symbol in the first transmission unit and the second reference signal is on the third symbol in the second transmission unit. Located in

  In another possible implementation, the first reference signal is carried in the first subframe and the position of the first reference signal is the position of the first reference signal in the first subframe , The second reference signal is carried in the second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is the same as that of the second reference signal in the second subframe. The same as in the time domain position, the number of symbols used for downlink transmission in the first subframe is greater than the number of symbols used for uplink transmission in the first subframe, the second Used for downlink transmission within a subframe of That the number of symbols is less than the number of symbols used for uplink transmission in a second subframe.

  In another possible implementation, the first reference signal is carried in the first subframe and the position of the first reference signal is the position of the first reference signal in the first subframe , The second reference signal is carried in the second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, and the first reference signal is That the time domain position is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is the same as that of the second reference signal in the second subframe. The same as the time domain position, and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal, in the first reference signal in the first subframe. The frequency domain position is the second in the second subframe The same as the frequency domain position of the reference signal, and the number of symbols used for downlink transmission in the first subframe is greater than the number of symbols used for uplink transmission in the first subframe The number of symbols used for downlink transmission in the second subframe is less than the number of symbols used for uplink transmission in the second subframe.

  In another possible implementation scheme, the first subframe includes symbols used for downlink transmission, a guard period GP, and symbols used for uplink transmission, and is included in the first subframe. And, uplink transmission corresponding to a symbol used for uplink transmission includes hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and is included in the first subframe and corresponds to a symbol used for downlink transmission The downlink transmission includes downlink control transmission, downlink data transmission, and transmission of a first reference signal, and the second subframe is a symbol used for downlink transmission, a guard period GP, Downlink transmissions corresponding to the symbols included in the second subframe and used for downlink transmission, including symbols used for uplink transmission, are Uplink transmission, including link control transmission, corresponding to a symbol included in the second subframe and used for uplink transmission, includes uplink control transmission, uplink data transmission, and transmission of a second reference signal And.

  In another possible implementation scheme, the first subframe starts with the symbols contained in the first subframe and used for downlink transmission, is contained in the first subframe and used for uplink transmission And the second subframe starts with a symbol included in the second subframe and used for downlink transmission, and is a symbol included in the second subframe and used for uplink transmission. It is over.

  In another possible implementation scheme, it is specific that the time domain position of the first reference signal in the first subframe is the same as the time domain position of the second reference signal in the second subframe. The index of the symbol occupied by the first reference signal in the first subframe is the same as the index of the symbol occupied by the second reference signal in the second subframe.

  In another possible implementation scheme, the first reference signal is located on the third symbol in the first subframe and the second reference signal is on the third symbol in the second subframe. Located in

  In another possible implementation, the first device is a user equipment and the transceiver module receives the first reference signal based on the position of the first reference signal and the position of the second reference signal. And specifically configured to transmit the second reference signal.

  In another possible implementation, the first device is a base station and the transceiver module transmits the first reference signal based on the position of the first reference signal and the position of the second reference signal And specifically configured to receive the second reference signal.

A fifth aspect of the present invention provides a user equipment,
A determination module configured to determine a time frequency resource of the control channel;
And a receiving module configured to receive downlink control information based on the time frequency resource of the control channel.

  In some possible implementations, the determination module is specifically configured to determine a time frequency resource of the first control channel and to determine a time frequency resource of the second control channel, and the receiving module is configured to: Specifically, the first downlink control information is detected based on the time frequency resource of the first control channel, and the second downlink control information is detected based on the time frequency resource of the second control channel. Configured.

  In another possible implementation scheme, the symbols occupied by the time frequency resource of the first control channel are located before the symbols occupied by the time frequency resource of the second control channel.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time frequency resource of the second control channel starts with the symbol l _{i + k} , k is a positive integer greater than or equal 1 and the symbols l _i to l _{i + k−1} transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time-frequency resource of the second control channel starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second The control channel and downlink data are multiplexed on the time frequency resource corresponding to the symbol after symbol l _{i -1} .

  In another possible implementation, the determination module determines the time frequency resource of the first control channel in the first subframe and determines the time frequency resource of the second control channel in the first subframe Specifically, the first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe. Uplink transmissions corresponding to the symbols used for uplink transmission, including hybrid automatic retransmission request acknowledgment ACK-ACK transmissions, corresponding to the symbols contained in the first subframe and used for downlink transmission Downlink transmissions include downlink control transmission, downlink data transmission, and transmission of the first reference signal, and are included in and below the first subframe. The symbols used for forward link transmission include symbols occupied by time frequency resources of the first control channel and symbols occupied by time frequency resources of the second control channel.

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel begins with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 And the (i + 1) th symbol to the (i + k) th symbol in the first subframe are used to transmit a reference signal, the reference signal being a second positive integer It is used to demodulate the control channel and / or data, and the (l-k1) th to lth symbols in the first subframe are used for uplink transmission in the first subframe Symbols, l is the number of symbols included in the first subframe, and k1 is one or more positive Is an integer of

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe or the second control The time frequency resource of the channel is located on the symbol after the ith symbol in the first subframe, and the second control channel and downlink data are from the ith symbol in the first subframe Multiplexed on a time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and (i + k2 +) in the first subframe The symbol of 1) is the guard period in the first subframe And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the 1st symbol The number of symbols included in the subframe of

  In another possible implementation manner, the determination module determines the time frequency resource of the first control channel in the second subframe and the time frequency resource of the second control channel is present in the second subframe And the second subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and the second sub-frame The downlink transmission corresponding to the symbol contained in the frame and used for downlink transmission includes downlink control transmission, and is an uplink corresponding to the symbol contained in the second subframe and used for uplink transmission The transmission includes transmission of a second reference signal, uplink data transmission, and uplink control transmission.

  In another possible implementation, the symbol contained in the second subframe and used for downlink transmission is the first symbol in the second subframe and the time frequency resource of the first control channel Occupies the first symbol in the second subframe.

  In another possible implementation manner, the determination module is further configured to determine a time frequency resource of the second control channel according to the first downlink control information.

  In another possible implementation, the first downlink control information is carried in sub-frame n and the second control channel is carried in sub-frame n or the first downlink control information Are carried in subframe n, the second control channel is carried in subframe n + 1, and n is a positive integer.

  In another possible implementation scheme, the receiving module is further configured to receive the downlink shared channel according to the first downlink control information and the second downlink control information, the first downlink control information being , Information on the time frequency resource of the second downlink control channel and / or the information on the time frequency resource of the downlink shared channel, the second downlink control information comprising modulation and coding of the downlink shared channel Contains information.

  In another possible implementation, the first control channel is demodulated according to the reference signal carried on the time frequency resource of the first control channel.

  In another possible implementation scheme, the determination module is specifically configured to determine the time frequency resource of the control channel in subframe n, and if subframe n belongs to subframe set 1, the determination module determines According to a preset rule, the time-frequency resource of the control channel in subframe n is determined, or, if subframe n belongs to subframe set 2, the determination module determines in subframe n according to downlink control signaling. The sub-frame set 1 includes subframes carrying synchronization signals and / or system information, and the subframe set 2 comprises subframes carrying synchronization signals and / or system information. And n is an integer of 0 or more.

  In another possible implementation scheme, the determination module is specifically configured to determine the time frequency resource of the control channel in subframe n according to the downlink control signaling carried in subframe nk, where k is It is an integer of 0 or more.

  In another possible implementation manner, the determination module is specifically configured to determine the time frequency resource of the control channel in subframe n according to the downlink control signaling carried in subframe n-1 .

  In another possible implementation, the time frequency resource of the control channel in subframe n occupies two symbols in the time domain.

  In another possible implementation manner, the control channel comprises control channel set 1 and the determination module is specifically configured to determine the time frequency resource of control channel set 1 and the control channel in control channel set 1 Uses the distributed transmission mode.

  In another possible implementation, the control channel comprises control channel set 1 and control channel set 2 and the determination module determines the time frequency resource of control channel set 1 and the time frequency resource of control channel set 2 Specifically, the control channels in control channel set 1 use a distributed transmission mode, and the control channels in control channel set 2 use a localized transmission mode.

  In another possible implementation scheme, the determination module detects downlink control information in subframe n, and according to the downlink control information detected in subframe n, control channel set 1 in subframe n + k Are further configured to determine the time frequency resource of n, where n is an integer and k is a positive integer greater than or equal to one.

  In another possible implementation scheme, the determination module determines the time frequency resource of control channel set 2 in subframe n + k based on the time frequency resource of control channel set 1 in subframe n + k It is further configured.

  In another possible implementation scheme, the sub-frames carrying the control channel do not carry synchronization signals and / or system information.

  In another possible implementation, the determination module determines time-frequency resources of the base set of control channels, detects downlink control information based on the base-set time-frequency resources, and detects the detected downlink control information. In particular, it is configured to determine the time frequency resources of the extended set of control channels.

  In another possible implementation manner, the receiving module is further configured to receive system information, and the determining module is further configured to determine time-frequency resources of a base set of control channels according to the system information.

  In another possible implementation, the determination module determines the number of symbols occupied by the time frequency resource of the basic set of control channels according to the system information or the time frequency resources of the basic set of control channels according to the system information Determine the number of physical resource blocks occupied by the control channel, or determine information on the number of physical resource blocks occupied by time frequency resources of the basic set of control channels according to system information, or control channel according to system information Determine the information on the number of resource block pairs occupied by the time-frequency resource of the basic set of H, or according to system information, the information on the number of subcarriers occupied by the time-frequency resource of the basic set of control channels Or constant, or according to the system information, further configured to determine a control channel element CCE number time corresponding to the frequency resources of the basic set of control channels.

  In another possible implementation scheme, the determination module is specifically configured to determine the time frequency resources of the basic set of control channels according to preset rules.

  In another possible implementation scheme, the preset rule is that the time frequency resources of the basic set of control channels occupy one symbol.

  In another possible implementation scheme, the receiving module is further configured to receive system information, and the determining module, according to the system information, the number of physical resource blocks occupied by time-frequency resources of the basic set of control channels, or Occupied by the number of control channel elements corresponding to the time frequency resources of the basic set of control channels, or the number of physical resource blocks occupied by the time frequency resources of the basic set of control channels, or time frequency resources of the basic set of control channels The number of resource blocks or the number of subcarriers occupied by time frequency resources of the basic set of control channels is determined, and the number of symbols occupied by time frequency resources of the control channel is determined by the user equipment according to a predefined rule To do Specifically, the predefined rule is that the number of symbols occupied by the time frequency resource of the control channel is a fixed value, or the number of symbols occupied by the time frequency resource of the control channel is preset It may be a value, for example, two symbols.

  In another possible implementation scheme, the user equipment further comprises a detection module configured to detect downlink control information based on the basic set of time frequency resources in subframe n, and the determination module Specifically configured to determine the time frequency resources of the extended set of control channels in subframe n + k according to the downlink control information detected in frame n, where n is an integer and k is greater than or equal to 0 Is a positive integer of Optionally, the value of k is equal to one.

  In another possible implementation scheme, the decision module decides according to the detected downlink control information whether an extended set of control channels is present or according to the detected downlink control information. It is further configured to determine a transmission mode corresponding to the extension set.

  In another possible implementation, the basic set is present in all subframes containing the symbols used for downlink transmission.

  In another possible implementation, the extension set is not present in subframes carrying synchronization signals and / or system information.

A sixth aspect of the invention provides a base station,
A determination module configured to determine a time frequency resource of the control channel;
And a transmitting module configured to transmit downlink control information based on time frequency resources of the control channel.

  In some possible implementations, the determining module is specifically configured to determine a time frequency resource of the first control channel and to determine a time frequency resource of the second control channel, and the transmitting module is configured to: Specifically, the first downlink control information is transmitted based on the time frequency resource of the first control channel, and the second downlink control information is transmitted based on the time frequency resource of the second control channel. Configured.

  In another possible implementation scheme, the symbols occupied by the time frequency resource of the first control channel are located before the symbols occupied by the time frequency resource of the second control channel.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time frequency resource of the second control channel starts with the symbol l _{i + k} , k is a positive integer greater than or equal 1 and the symbols l _i to l _{i + k−1} transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data.

In another possible implementation, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , i being a positive integer greater than or equal to 1 And the time-frequency resource of the second control channel starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second The control channel and downlink data are multiplexed on the time frequency resource corresponding to the symbol after symbol l _{i -1} .

  In another possible implementation, the determination module determines the time frequency resource of the first control channel in the first subframe and determines the time frequency resource of the second control channel in the first subframe Specifically, the first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe. Uplink transmissions corresponding to the symbols used for uplink transmission, including hybrid automatic retransmission request acknowledgment ACK-ACK transmissions, corresponding to the symbols contained in the first subframe and used for downlink transmission Downlink transmissions include downlink control transmission, downlink data transmission, and transmission of the first reference signal, and are included in and below the first subframe. The symbols used for forward link transmission include symbols occupied by time frequency resources of the first control channel and symbols occupied by time frequency resources of the second control channel.

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel begins with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 And the (i + 1) th symbol to the (i + k) th symbol in the first subframe are used to transmit a reference signal, the reference signal being a second positive integer It is used to demodulate the control channel and / or data, and the (l-k1) th to lth symbols in the first subframe are used for uplink transmission in the first subframe Symbols, l is the number of symbols included in the first subframe, and k1 is one or more positive Is an integer of

  In another possible implementation, the time frequency resources of the first control channel are i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe or the second control The time frequency resource of the channel is located on the symbol after the ith symbol in the first subframe, and the second control channel and downlink data are from the ith symbol in the first subframe Multiplexed on a time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and (i + k2 +) in the first subframe The symbol of 1) is the guard period in the first subframe And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the 1st symbol The number of symbols included in the subframe of

  In another possible implementation manner, the determination module determines the time frequency resource of the first control channel in the second subframe and the time frequency resource of the second control channel is present in the second subframe And the second subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and the second sub-frame The downlink transmission corresponding to the symbol contained in the frame and used for downlink transmission includes downlink control transmission, and is an uplink corresponding to the symbol contained in the second subframe and used for uplink transmission The transmission includes transmission of a second reference signal, uplink data transmission, and uplink control transmission.

  In another possible implementation, the symbol contained in the second subframe and used for downlink transmission is the first symbol in the second subframe and the time frequency resource of the first control channel Occupies the first symbol in the second subframe.

  In another possible implementation scheme, the first downlink control information comprises information on time frequency resources of the second control channel.

  In another possible implementation, the first downlink control information is carried in sub-frame n and the second control channel is carried in sub-frame n or the first downlink control information Are carried in subframe n, the second control channel is carried in subframe n + 1, and n is a positive integer.

  In another possible implementation scheme, the transmitting module is further configured to transmit the downlink shared channel, and the first downlink control information comprises information on time frequency resources of the second downlink control channel and / or Alternatively, the second downlink control information may include information on time and frequency resources of the downlink shared channel, and the second downlink control information may include modulation and coding information on the downlink shared channel.

  In another possible implementation scheme, the transmission module is further configured to transmit a reference signal on the time frequency resource of the first control channel, the reference signal being used to demodulate the first control channel Ru.

  In another possible implementation, the transmission module is further configured to transmit downlink control signaling, and the downlink control signaling is used to determine the time frequency resource of the control channel in subframe n, Subframe n does not carry synchronization signals and / or system information, and n is an integer greater than or equal to zero.

  In another possible implementation, the transmitting module is further configured to transmit downlink control signaling in subframe nk, where k is an integer greater than or equal to zero. Optionally, k is equal to one.

  In another possible implementation scheme, the determination module is specifically configured to determine the time frequency resource of the control channel in subframe n according to a predefined rule, subframe n being the synchronization signal and / or Or carry system information. The predefined rule is that the number of symbols occupied by the control channel time frequency resource is a fixed value, or a value in which the number of symbols occupied by the control channel time frequency resource is preset, eg, two It may be a symbol.

  In another possible implementation, the control channel comprises control channel set 1 and the determination module is specifically configured to determine the time frequency resource of control channel set 1 and the transmission module is in distributed transmission mode Are further configured to transmit the control channel based on the time frequency resource of control channel set 1.

  In another possible implementation, the control channel comprises control channel set 1 and control channel set 2 and the determination module determines the time frequency resource of control channel set 1 and the time frequency resource of control channel set 2 Specifically, the control channels in control channel set 1 use a distributed transmission mode, and the control channels in control channel set 2 use a localized transmission mode.

  In another possible implementation, the transmission module is further configured to transmit downlink control information in subframe n, the downlink control information is time frequency of control channel set 1 in subframe n + k Contains information about the resource, n is an integer and k is a positive integer greater than or equal to 1.

  In another possible implementation scheme, the determination module is specifically configured to determine time frequency resources of a base set of control channels, and the transmission module is configured to downlink control information based on the base set time frequency resources. And the downlink control information includes information on time frequency resources of the extended set of control channels.

  In another possible implementation, the transmission module is further configured to transmit system information, the system information including information about time frequency resources of a basic set of control channels.

  In another possible realization that the system information comprises information about time frequency resources of the basic set of control channels, in particular, the symbols in which the system information is occupied by time frequency resources of the basic set of control channels The information about the number is included, or the system information includes the number of physical resource block pairs occupied by the time frequency resource of the basic set of control channels, or the system information is occupied by the time frequency resources of the basic set of control channel Including information on the number of physical resource blocks, or system information includes information on the number of resource blocks occupied by time-frequency resources of the basic set of control channels, or system information includes time of the basic set of control channels Space resource by frequency resource It includes information about the number of subcarriers, or the system information is to include information about the control channel element CCE number corresponding to the time-frequency resources of the basic set of control channels.

  In another possible implementation scheme, the determination module is specifically configured to determine the time frequency resources of the basic set of control channels according to preset rules.

  In another possible implementation scheme, the preset rule is that the time frequency resources of the basic set of control channels occupy one symbol.

  In another possible implementation scheme, the transmitting module is specifically configured to transmit downlink control information based on the basic set of time-frequency resources in subframe n, the downlink control information comprising It contains information about time frequency resources of the extended set of control channels in n + k, where n is an integer and k is a positive integer greater than or equal to zero. Optionally, the value of k is equal to one.

  In another possible implementation scheme, the downlink control information may include information indicating whether or not an extended set of control channels exists, or the downlink control information may indicate a transmission mode corresponding to the extended set of control channels. Contains the information shown.

  In another possible implementation, the basic set is present in all subframes containing the symbols used for downlink transmission.

  In another possible implementation, the extension set is not present in subframes carrying synchronization signals and / or system information.

  As can be appreciated from the above technical solution, the embodiments of the present invention have the following advantages. By determining the position of the reference signal, the first device performs uplink-downlink interference estimation by using the reference signal to better transmit or receive the reference signal, thereby providing better dynamic Support TDD to maintain forward compatibility.

FIG. 5 is a schematic diagram of an embodiment of a method for transmitting and receiving information according to an embodiment of the present invention. FIG. 7 is a schematic diagram of another embodiment of a method for transmitting and receiving information in accordance with an embodiment of the present invention. FIG. 5 is a schematic view of the position of a first reference signal in a first subframe according to an embodiment of the present invention. FIG. 7 is a schematic view of the position of a second reference signal in a second subframe according to an embodiment of the present invention. FIG. 7 is another schematic view of the position of the first reference signal in the first subframe according to an embodiment of the present invention. FIG. 7 is another schematic view of the position of the second reference signal in the second subframe according to an embodiment of the present invention. FIG. 7 is a schematic diagram of another embodiment of a method for transmitting and receiving information in accordance with an embodiment of the present invention. FIG. 5 is a schematic diagram of an embodiment of a method for receiving information according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an embodiment of a method for transmitting information according to an embodiment of the present invention. FIG. 5 is a schematic block diagram of a first subframe in a time domain according to an embodiment of the present invention. FIG. 6 is another schematic block diagram of a first subframe in a time domain according to an embodiment of the present invention. FIG. 1 is a schematic view of an embodiment of a device according to an embodiment of the present invention. FIG. 5 is a schematic view of an embodiment of a user equipment according to an embodiment of the present invention; FIG. 5 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention.

  Embodiments of the present invention provide a method, user equipment and base station for transmitting and receiving information to better support dynamic TDD and maintain forward compatibility.

  In the specification, claims and attached drawings of the present invention, the terms "first", "second", "third", "fourth" and the like are intended to distinguish between similar things. And does not necessarily indicate a particular order or sequence. It should be understood that the so-called data can be exchanged in appropriate circumstances, whereby the embodiments of the invention described herein can be implemented in an order other than that illustrated or described herein. . Furthermore, "includes", "includes" and other variations are meant to cover non-exclusive inclusions, for example, processes, methods, systems, products or devices that include a list of steps or units are not necessarily limited to these. And may not be explicitly listed, or may include other units unique to such processes, methods, systems, products or devices. Furthermore, in the present specification and claims of the present invention, the term "and / or" describes only an association relation that describes related things, and three relations may exist. Represent. For example, A and / or B may represent the following three cases: when only A is present, when both A and B are present, and when only B is present. Furthermore, in this specification, the characters "/" indicate the "or" relationship between related things.

  The present invention is mainly applied to 5G communication system, Long Term Evolution (abbreviation: LTE) system or LTE advanced system, and may be applied to a single carrier or a plurality of carriers.

  In the following, the technical solution of the present invention is described with reference to a specific example.

  Referring to FIG. 1, an embodiment of a method for transmitting and receiving information in an embodiment of the present invention includes the following steps.

  101. The first device determines the position of the reference signal.

  In this embodiment, the first device may be a user equipment or a base station. The reference signal may include a first reference signal and a second reference signal, the first reference signal may be referred to as a first demodulation reference signal DMRS, and the second reference signal is a second reference signal. May be called a demodulation reference signal DMRS. The first reference signal may be used for uplink data demodulation and the second reference signal may be used for downlink data demodulation. The position of the first reference signal (time domain position and / or frequency domain position) may be the same as the position of the second reference signal (time domain position and / or frequency domain position).

  Furthermore, if the position of the first reference signal (time domain position and / or frequency domain position) is the same as the position of the second reference signal (time domain position and / or frequency domain position), the first device is , Perform better uplink downlink interference estimation by using the first reference signal and the second reference signal, and thus perform better uplink downlink interference cancellation, and thereby better TDD Can be used to better match the actual service, improve the spectral efficiency of the system, and provide a better low latency service.

  102. The first device transmits or receives a reference signal based on the determined position of the reference signal.

  In this embodiment, after the first device determines the position of the reference signal, the first device transmits or receives the reference signal based on the determined position of the reference signal.

  Optionally, whether the first device receives the first reference signal based on the position of the first reference signal and transmits the second reference signal based on the position of the second reference signal Alternatively, the first device transmits the second reference signal based on the position of the first reference signal, and receives the second reference signal based on the position of the second reference signal.

  In this embodiment, the first device may be a user equipment or a base station, so that to facilitate the understanding of the technical solution of the present invention, the first device is a user equipment And two cases where the first device is a base station will be described separately below with reference to specific embodiments.

  1. Transmit and receive information in this embodiment of the invention with reference to FIG. 2 when the reference signal comprises a first reference signal and a second reference signal and the first device is a user equipment Another embodiment of the method for comprises the following steps:

  201. The user equipment determines the position of the first reference signal, which is used for downlink data demodulation.

  202. The user equipment determines the position of the second reference signal, which is used for uplink data demodulation.

  In this embodiment, the sequence of steps 201 and 202 is not limited, nor is the interdependence between step 201 and step 202 limited.

  In this embodiment, the time domain position of the first reference signal is the same as the time domain position of the second reference signal, or the time domain position and the frequency domain position of the first reference signal are the second It should be noted that it is the same as the time domain position and frequency domain position of the reference signal.

  Optionally, the time domain position of the first reference signal is the same as the time domain position of the second reference signal. The fact that the time domain position of the first reference signal is the same as the time domain position of the second reference signal also means that the symbol index of the symbol occupied by the first reference signal is occupied by the second reference signal It is the same as the symbol index of the symbol.

  Further optionally, the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

  Further optionally, the user device may use a transmission unit to carry the reference signal, or the user device may use subframes to carry the reference signal.

Scheme 1: Transmission unit The first reference signal is conveyed in the first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit, and the second And the position of the second reference signal is the position of the second reference signal in the second transmission unit, and the time domain position of the first reference signal. Is the same as the time domain position of the second reference signal, specifically, the time domain position of the first reference signal in the first transmission unit is the second reference in the second transmission unit The same as the time domain position of the signal, the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit.

  It should be noted that the transmission unit in all embodiments of the present invention may also be referred to as transmission time unit. The transmission time unit may be a subframe, or may be a transmission time interval, or it may be necessary to complete the transmission of the shared channel, including the transmission of the control channel corresponding to the shared channel, the transmission of the reference signal and the transmission of the shared channel It may be of any duration.

  Further optionally, the frequency domain position of the first reference signal being the same as the frequency domain position of the second reference signal means that the frequency domain position of the first reference signal in the first transmission unit is the second And the same as the frequency domain position of the second reference signal in the transmission unit.

  Further optionally, the time frequency resource position of the first reference signal in the first transmission unit is the same as the time frequency resource position in the second transmission unit.

  Further optionally, the first reference signal is located on the third symbol in the first transmission unit and the second reference signal is located on the third symbol in the second transmission unit .

Scheme 2: Sub-frame The first reference signal is carried in the first sub-frame, and the position of the first reference signal is the position of the first reference signal in the first sub-frame; Of the second reference signal is carried in the second subframe, the position of the second reference signal is the position of the second reference signal in the second subframe, and the time domain position of the first reference signal Is the same as the time domain position of the second reference signal, the time domain position of the first reference signal in the first subframe is the time domain position of the second reference signal in the second subframe And the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal, and the frequency domain position of the first reference signal in the first subframe. Is the second reference in the second subframe The same as the frequency domain position of the reference signal, and the number of symbols used for downlink transmission in the first subframe is greater than the number of symbols used for uplink transmission in the first subframe The number of symbols used for downlink transmission in the second subframe is less than the number of symbols used for uplink transmission in the second subframe.

  Here, in the first subframe, the frequency domain position of the first reference signal in the first subframe is the same as the frequency domain position of the second reference signal in the second subframe. The index of the frequency domain resource occupied by the first reference signal is the same as the index of the frequency domain resource occupied by the second reference signal in the second subframe, or in the first subframe The index of the resource element (English full name: Resource element, abbreviation: RE) occupied by the first reference signal is the same as the index of the resource element occupied by the second reference signal in the second subframe May be. The frequency band occupied by the first reference signal and the frequency band occupied by the second reference signal may be the same frequency band or may be different frequency bands.

  Further optionally, the first subframe includes symbols used for downlink transmission, a guard period GP, and symbols used for uplink transmission, and is included in the first subframe and uplink The uplink transmission corresponding to the symbol used for transmission includes hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and is a downlink transmission corresponding to a symbol included in the first subframe and used for downlink transmission Includes downlink control transmission, downlink data transmission, and transmission of a first reference signal.

  Further optionally, the first subframe starts with a symbol included in the first subframe and used for downlink transmission, and is a symbol included in the first subframe and used for uplink transmission It is over.

  Further optionally, the second subframe includes symbols used for downlink transmission, a guard period GP, and symbols used for uplink transmission, and is included in the second subframe and downlink The downlink transmission corresponding to the symbol used for transmission includes downlink control transmission, and the uplink transmission corresponding to the symbol included in the second subframe and used for uplink transmission is uplink control transmission , Uplink data transmission, and transmission of a second reference signal.

  Further optionally, the second subframe starts with a symbol included in the second subframe and used for downlink transmission, and is a symbol included in the second subframe and used for uplink transmission It is over.

  More optionally, the time domain position of the first reference signal in the first subframe is the same as the time domain position of the second reference signal in the second subframe, specifically: The index of the symbol occupied by the first reference signal in the first subframe is the same as the index of the symbol occupied by the second reference signal in the second subframe.

  Further optionally, the first reference signal is located on the third symbol in the first subframe and the second reference signal is located on the third symbol in the second subframe .

  In the example where the subframe includes 14 symbols, the position of the first reference signal in the first subframe and the position of the second reference signal in the second subframe are shown in FIGS. 3 and 4 respectively. Can be shown. FIG. 3 provides an example 1 of the time domain configuration of the first subframe. In FIG. 3, the first symbol in the first subframe is the symbol used for downlink control transmission, and the first reference signal is carried on the third symbol in the first subframe. The GP occupies the thirteenth symbol in the first subframe, and the fourteenth symbol in the first subframe is used for uplink control transmission. FIG. 4 provides an example 1 of the time domain configuration of the second subframe. In FIG. 4, the first symbol in the second subframe is the symbol used for downlink control transmission, and the second reference signal is carried on the third symbol in the second subframe. The GP occupies the second symbol in the second subframe, and optionally, the fourteenth symbol in the second subframe is used for uplink control transmission. As can be appreciated from the drawings, in FIGS. 3 and 4, the position of the first reference signal in the first subframe is the same as the position of the second reference signal in the second subframe. In FIG. 3 and FIG. 4, the reference signal is arranged forward on the third symbol in the subframe. Thus, data demodulation and decoding can be performed quickly, while ensuring that the position of the first reference signal is the same as the position of the second reference signal.

  In another example, in which the subframe contains 14 symbols, the position of the first reference signal in the first subframe and the position of the second reference signal in the second subframe are as shown in FIGS. It may be shown in 6. FIG. 5 provides an example 2 of the time domain configuration of the first subframe. In FIG. 5, the first symbol in the first subframe is a symbol used for downlink control transmission, and the first reference signal is a third symbol and a fourth in the first subframe. Of the third symbol and the remaining REs on the fourth symbol may be used to transmit other reference signals, or downlink data May be used to send In FIG. 5, the two REs adjacent in the frequency domain and used for the first reference signal may respectively correspond to different antenna ports of the first reference signal, and GP corresponds to the first sub The thirteenth symbol in the frame is occupied, and the fourteenth symbol in the first subframe is used for uplink control transmission. FIG. 6 provides an example 2 of the time domain configuration of the second subframe. In FIG. 6, the first symbol in the second subframe is the symbol used for downlink control transmission, and the second reference signal is the third symbol and the fourth in the second subframe. Of the third symbol and the remaining REs on the fourth symbol may be used to transmit other reference signals, or uplink data May be used to send In FIG. 6, the two REs adjacent in the frequency domain and used for the first reference signal may respectively correspond to different antenna ports of the first reference signal, and GP corresponds to the second sub The second symbol in the frame is occupied, and optionally, the fourteenth symbol in the second subframe is used for uplink control transmission. As can be appreciated from the drawings, in FIGS. 5 and 6, the position of the first reference signal in the first subframe is the same as the position of the second reference signal in the second subframe.

  Further optionally, the first subframe may be a DL centered subframe or DL centric subframe. Further optionally, the second subframe may be a UL centered subframe or UL centric subframe, and all symbols in the uplink subframe are used for uplink transmission.

  In this embodiment of the invention, the first reference signal may also be referred to as a first demodulation reference signal (DMRS) and the second reference signal is also referred to as a second demodulation reference signal (DMRS). May be

  In all embodiments of the present invention, the symbols may be time domain symbols, eg, Orthogonal Frequency Division Multiplexing (abbr .: OFDM) symbols, or single carrier frequency division multiple access. Full name: Single-carrier Frequency Division Multiple Access (abbreviation: SC-FDMA) symbol may be used.

  203. The user device receives a first reference signal based on the position of the first reference signal.

  204. The user device transmits a second reference signal based on the position of the second reference signal.

  In this embodiment, the sequence of steps 203 and 204 is not limited, nor is the interdependence between steps 203 and 204 limited.

  In this embodiment, the position of the first reference signal used for downlink data demodulation is the same as the position (time domain position and / or frequency domain position) of the second reference signal used for uplink data demodulation. Therefore, by using the reference signal, uplink downlink interference estimation can be performed better, and thus uplink downlink interference cancellation performed better, thereby using dynamic TDD better, and more It can be well matched to the actual service, improve the spectral efficiency of the system, and provide better low latency service.

  In a dynamic TDD scheme, the transmission direction of a subframe or transmission unit may change dynamically, ie, the subframe or transmission unit may be dynamically applied to uplink data transmission or downlink data transmission. , Thereby better match current service requirements. For example, if the downlink traffic is greater than the uplink traffic in the current service, Dynamic TDD may dynamically change most subframes for downlink data transmission. Thus, downlink traffic can be transmitted better and more quickly, improving the spectral efficiency of the system and reducing the latency of downlink data packets. However, different subframes may use different orientations within the same subframe or the same transmission unit, as the subframe direction may change dynamically. As a result, severe uplink downlink interference may be caused, dynamic TDD may not be better applied, or dynamic TDD application scenarios may be limited.

  In this embodiment of the invention, the position of the first reference signal is the same as the position of the second reference signal, and the sequence of the first reference signal and the second reference signal may be a predefined sequence. Thus, different cells can perform better interference estimation and cancellation by using the reference signal. Thus, uplink downlink interference is significantly reduced and dynamic TDD performance is improved.

  On the other hand, in this embodiment of the invention, transmission of self-contained control and pilot is enabled in both the first and second subframes. Specifically, control corresponding to data of the current subframe may be fed back or transmitted within the current subframe without depending on other subframes, whereby the other subframe is It may always be occupied by future services, ie it can better support forward compatibility.

  2. Transmit and receive information in this embodiment of the invention with reference to FIG. 7 when the reference signal comprises a first reference signal and a second reference signal and the first device is a base station Another embodiment of the method for comprises the following steps:

  301. The base station determines the position of the first reference signal, which is used for downlink data demodulation.

  302. The base station determines the position of the second reference signal, which is used for uplink data demodulation.

  In this embodiment, the sequence of steps 301 and 302 is not limited, nor is the interdependence between step 301 and step 302 limited.

  It should be noted that steps 301 and 302 in this embodiment are similar to steps 201 and 202 in the previous embodiment and will not be described again in this embodiment.

  303. The base station transmits a first reference signal based on the position of the first reference signal.

  304. The base station receives a second reference signal based on the position of the second reference signal.

  In this embodiment, the sequence of steps 303 and 304 is not limited, and the interdependence between steps 303 and 304 is also not limited.

  In the above embodiments, the technical solution of the present invention is mainly described in terms of transmission unit and subframes. In the following, the technical solution of the present invention is described in terms of control channel configuration.

  Referring to FIG. 8, an embodiment of a method for receiving information in an embodiment of the present invention includes the following steps.

  401. The user equipment determines the time frequency resources of the control channel.

  402. The user apparatus receives downlink control information based on the time frequency resource of the control channel.

  In the following, steps 401 and 402 will be described correspondingly by using several specific implementation schemes. It should be noted that some implementation schemes provided by the present invention are not intended to limit the technical solution of the present invention, but are intended to better explain the technical solution. . In the present invention, other realization schemes may also be used for the corresponding description, and thus are not limited here. The implementation scheme of this embodiment of the invention may be as follows.

Optionally, it is possible for the user equipment to determine the time frequency resource of the control channel
The user equipment determines the time frequency resource of the control channel in subframe n,
When subframe n belongs to subframe set 1, the user apparatus determines the time frequency resource of the control channel in subframe n according to a preset rule, or subframe n belongs to subframe set 2 If so, the user equipment determines the time frequency resource of the control channel in subframe n according to the downlink control signaling,
Subframe set 1 includes subframes carrying synchronization signals and / or system information, and subframe set 2 does not include subframes carrying synchronization signals and / or system information,
n includes that it is an integer greater than or equal to 0.

  Here, subframe set 1 includes subframes carrying synchronization signals and / or system information, and subframe set 2 does not include subframes carrying synchronization signals and / or system information. Specifically, for example, subframe set 1 may be a subframe carrying synchronization signals and / or system information, and subframe set 2 may be a subframe carrying synchronization signals and / or system information in a radio frame Other subframes may carry the downlink control channel. Here, the system information may be a master information block (Master information block).

  Further optionally, the user equipment determining the time frequency resource of the control channel in subframe n according to downlink control signaling may be performed according to the downlink control signaling carried in subframe nk by the user equipment, Determine the time frequency resources of the control channel in subframe n, including k being an integer greater than or equal to 0; For example, if the value of k is equal to 1, the user equipment determines the time frequency resource of the control channel in subframe n according to the downlink control signaling carried in subframe n-1. Subframe nk may represent the kth subframe counting from subframe n, and subframe nk and subframe n may or may not be in the same radio frame. It should be noted that good things. Subframe nk and subframe n are in two adjacent radio frames if they are not in the same radio frame. Here, downlink control signaling may be downlink control information or information carried in a downlink control information format.

  Further optionally, the user equipment determining the time frequency resource of the control channel in subframe n according to a preset rule, the time frequency resource of the control channel in subframe n occupies two symbols Or the time frequency resource of the control channel in subframe n may occupy N1 symbols, and N1 may be a positive integer greater than or equal to 1 and less than 4, or control in subframe n The number of symbols occupied by the time frequency resources of the channel may be indicated by system information, ie indicated by the MIB.

  Obviously, since control channel resources in subframe set 1 are determined according to a preset rule, control channel resources in subframe set 1 are predefined or fixed, and the user apparatus is downlinked. The link control channel can be detected and access can be completed in the cell. Furthermore, in this embodiment of the present invention, the control channel resources in subframe set 2 are dynamically determined, since the time frequency resources of the control channel in subframe set 2 are determined by using downlink control signaling. You can change it. Thus, control channel resources can be configured according to actual requirements, fixed downlink resources are minimized, dynamic changes in uplink and downlink direction can be applied to more resources, dynamic TDD is better used it can. On the other hand, control channel resources in subframe set 2 are indicated by using downlink control signaling, so that forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, downlink control signaling may be used by legacy user equipment that downlink control channel resources are not present in subframes. May be used to support new features, while legacy user equipment may also co-exist.

Further optionally, the control channel comprises control channel set 1 and the user equipment determines the time frequency resource of the control channel
The user equipment determines the time frequency resource of control channel set 1;
The control channels in control channel set 1 may include using a distributed transmission mode.

  Here, when the control channel uses the distributed transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean that it is distributed over time frequency resources. For example, specifically, resource element groups corresponding to control channels carrying downlink control information DCI format are distributed over time frequency resources of the control channels. Because the control channel is transmitted in distributed mode, more diversity gain can be obtained and the performance of the control channel is improved.

Alternatively, and further optionally, the control channel comprises control channel set 1 and control channel set 2 and the user equipment determines the time frequency resource of the control channel
The user equipment determines the time frequency resource of control channel set 1;
The user equipment determines the time frequency resource of control channel set 2;
The control channels in control channel set 1 include using the distributed transmission mode, and the control channels in control channel set 2 include using the localized transmission mode.

  Here, when the control channel uses the localized transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean to be localized on time frequency resources. For example, specifically, a resource element group corresponding to a control channel carrying downlink control information DCI format is localized on a part of time frequency resources of the control channel. Since the control channel is transmitted in localized mode, beamforming transmission mode can be used, the control channel is concentrated in the corresponding beam direction, and the control channel coverage is improved. Furthermore, localized transmission allows the user to combine reference signals on localized resources to perform channel estimation, which improves the performance of channel estimation and control channel based on beam transmission mode Performance is improved.

Further optionally, the user equipment determining the time frequency resource of control channel set 1
The user apparatus detects downlink control information in subframe n,
The user apparatus determines the time frequency resource of control channel set 1 in subframe n + k according to the downlink control information detected in subframe n, where n is an integer and k is one or more positive It may include being an integer.

Further optionally, the user equipment determines the time frequency resource of control channel set 2 in subframe n + k based on the time frequency resource of control channel set 1 in subframe n + k, specifically The user equipment may obtain the time frequency resources of control channel set 2 by subtracting the time frequency resources of control channel set 1 from the total time frequency resources of the control channel, or further, the user equipment may , The time frequency resource of control channel set 2 in subframe n + k according to the downlink control information detected in subframe n, n is an integer and k is a positive integer of 1 or more .

  Furthermore, the subframes carrying control channel set 2 are not subframes carrying synchronization signals and / or system information.

  Further optionally, the control channels in subframe set 1 may include only control channel set 1, and the control channels in subframe set 2 may include control channel set 1 and control channel set 2, subframe set Whether the control channel in 2 includes control channel set 2 and the time frequency resource of control channel set 2 may be indicated dynamically.

  Furthermore, in this embodiment of the present invention, control channel set 2 is incorporated into subframe set 2 by using dynamic signaling. Since the control channels in control channel set 2 are transmitted in localized mode, the control channels can be transmitted in beamforming mode, and the control channels are concentrated in the corresponding beam direction, improving the control channel coverage. Furthermore, localized transmission allows the user to combine reference signals on localized resources to perform channel estimation, which improves the performance of channel estimation and control channel based on beam transmission mode Performance is improved.

  Another implementation of this embodiment of the invention may be as follows.

Optionally, it is possible for the user equipment to determine the time frequency resource of the control channel:
The user equipment determines the time frequency resources of the basic set of control channels,
The user equipment detects downlink control information based on the basic set of time frequency resources,
The user equipment comprises determining the time frequency resource of the extended set of control channels according to the detected downlink control information.

Further optionally, it is possible for the user equipment to determine the time frequency resources of the basic set of control channels:
The user device receives system information,
The user equipment comprises determining the time frequency resource of the basic set of control channels according to the system information.

Further optionally, the user equipment determining the time frequency resources of the basic set of control channels according to the system information,
The user equipment determines the number of symbols occupied by the time frequency resources of the basic set of control channels according to the system information, or the user equipment is occupied by the time frequency resources of the basic set of control channels according to the system information Determining the number of physical resource block pairs, or determining the number of physical resource blocks occupied by the time frequency resource of the basic set of control channels according to system information, or according to the system information Determining the number of resource blocks occupied by time-frequency resources of the basic set of control channels, or determining the number of subcarriers occupied by time-frequency resources of the basic set of control channels according to the system information Or the user equipment comprises determining the number of control channel elements CCE corresponding to the time frequency resource of the basic set of control channels according to the system information.

Alternatively and further optionally, the user equipment determining time frequency resources of the basic set of control channels
The user equipment comprises determining time frequency resources of a basic set of control channels according to preset rules.

  The preset rule is that the time frequency resources of the basic set of control channels occupy one symbol.

Alternatively and further optionally, the user equipment determining time frequency resources of the basic set of control channels
The user device receives system information,
The user equipment determines the number of physical resource block pairs occupied by the time frequency resources of the basic set of control channels according to the system information, or the user equipment according to the system information determines the time frequency resources of the basic set of control channels The number of physical resource blocks to be occupied is determined, or the user equipment determines the number of resource blocks occupied by time frequency resources of the basic set of control channels according to the system information, or the user equipment according to system information Determine the number of subcarriers occupied by the time-frequency resource of the basic set of control channels, or the user equipment determines the number of control channel elements corresponding to the time-frequency resource of the basic set of control channels according to the system information ,
The user apparatus determines the number of symbols occupied by the time frequency resource of the control channel according to a predefined rule, and the predefined rule is that the number of symbols occupied by the time frequency resource of the control channel is a fixed value The number of symbols occupied by the time frequency resource of the control channel may be a preset value, for example, two symbols.

Further optionally, the user equipment detecting downlink control information based on the basic set of time frequency resources, and the user equipment according to the detected downlink control information the time frequency of the extended set of control channels Determining resources is
The user equipment detects downlink control information based on the basic set of time frequency resources in subframe n,
The user equipment determines the time frequency resource of the extended set of control channels in subframe n + k according to the downlink control information detected in subframe n, where n is an integer and k is a positive integer greater than or equal to 0 Including being an integer of Optionally, the value of k is equal to one.

Furthermore, the method is
The user apparatus determines whether an extended set of control channels exists according to the detected downlink control information, or the user apparatus responds to the extended set of control channels according to the detected downlink control information It further includes determining the transmission mode to be used. For example, the transmission mode corresponding to the extension set is dynamically indicated as a localized transmission mode or a distributed transmission mode.

  Further optionally, the base set is present in all subframes containing symbols used for downlink transmission.

  Further optionally, the extension set is not present in subframes carrying synchronization signals and / or system information.

  Clearly, the time frequency resources of the basic set of control channels are determined according to the preset rules, the downlink control information is detected based on the time frequency resources of the basic set, and the time frequency resources of the extended set of control channels Is determined according to the detected downlink control information. Thus, fixed downlink resources are minimized and used as a basic set of time frequency resources, and dynamic TDD can be better used. On the other hand, because the resources in the extension set are shown dynamically, forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, it is possible for the legacy user equipment that downlink control channel resources in the extension set are not present in the subframes. It may be shown dynamically, so that new functionality can be supported, while legacy user equipment can also co-exist.

  Furthermore, in this embodiment of the present invention, the transmission mode of the extension set is indicated by using dynamic signaling, so it can match the transmission mode of the control channel better. For example, when the enhanced control channel is mainly used for common control signaling, the transmission mode of the enhanced set may be indicated as a distributed mode, or the signaling of the enhanced set is mainly used for signaling dedicated to user equipment. At the same time, the localized transmission mode may be indicated, thereby better matching the control channel transmission mode.

  Another implementation of the invention may be as follows.

  The user equipment determining the time frequency resource of the control channel, the user equipment determining the time frequency resource of the first control channel, and the user equipment determining the time frequency resource of the second control channel May be.

Optionally, the user equipment determining the time frequency resource of the first control channel
The user equipment determines the time frequency resource of the first control channel in subframe n,
If subframe n belongs to subframe set 1, the user equipment determines the time frequency resource of the first control channel in subframe n according to a preset rule, or subframe n is a subframe set If belonging to 2, the user equipment determines the time frequency resource of the first control channel in subframe n according to the downlink control signaling,
Subframe set 1 includes subframes carrying synchronization signals and / or system information, and subframe set 2 does not include subframes carrying synchronization signals and / or system information,
n may be an integer of 0 or more.

Further optionally, the user equipment determining the time frequency resource of the first control channel in subframe n according to downlink control signaling,
The user equipment determines the time frequency resource of the first control channel in subframe n according to the downlink control signaling carried in subframe nk, including k being an integer greater than or equal to zero.

Alternatively and further optionally, the user equipment determining the time frequency resource of the first control channel in subframe n according to downlink control signaling,
The user equipment comprises determining the time frequency resource of the first control channel in subframe n according to the downlink control signaling carried in subframe n-1.

Alternatively and optionally, the user equipment may determine the time frequency resource of the first control channel in subframe n according to preset rules:
The time frequency resource of the first control channel in subframe n comprises occupying two symbols in the time domain.

Optionally, the first control channel comprises a first control channel set 1 and the user equipment determines the time frequency resource of the first control channel
The user equipment determines the time frequency resource of the first control channel set 1;
The first control channel in the first control channel set 1 includes using the distributed transmission mode.

  Here, the first control channel using the distributed transmission mode is occupied by the first control channel transmitted on the time frequency resource of the first control channel and carrying the downlink control information DCI format. It may mean that the time frequency resources are distributed over the time frequency resources of the control channel. For example, specifically, resource element groups corresponding to control channels carrying downlink control information DCI format are distributed over time frequency resources of the control channels. Because the control channel is transmitted in distributed mode, more diversity gain can be obtained and the performance of the control channel is improved.

Alternatively, optionally, the first control channel includes the first control channel set 1 and the first control channel set 2 and the user equipment determines the time frequency resource of the first control channel ,
The user equipment determines the time frequency resource of the first control channel set 1;
The user equipment determines the time frequency resource of the first control channel set 2;
The first control channel in the first control channel set 1 uses the distributed transmission mode, and the first control channel in the first control channel set 2 includes using the localized transmission mode .

  Here, when the first control channel uses the localized transmission mode, the time frequency resource transmitted by the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is It may mean to be localized on the time frequency resource of the control channel. For example, specifically, a resource element group corresponding to a control channel carrying downlink control information DCI format is localized on a part of time frequency resources of the control channel. Since the control channel is transmitted in localized mode, beamforming transmission mode can be used, the first control channel is concentrated in the corresponding beam direction and the coverage of the first control channel is improved. Furthermore, in localized transmission, the user can combine reference signals on localized resources to perform channel estimation, thereby improving the performance of channel estimation, the first based on beam transmission mode Control channel performance is improved.

Further optionally, the user equipment determining the time frequency resources of the first control channel set 1
The user apparatus detects downlink control information in subframe n,
The user apparatus determines the time frequency resource of the first control channel set 1 in subframe n + k according to the downlink control information detected in subframe n, n is an integer and k is 1 or more Including being a positive integer of

More optionally, the method is
Further, the user equipment may determine the time frequency resource of the first control channel set 2 in subframe n + k based on the time frequency resource of the first control channel set 1 in subframe n + k Including.

  Further optionally, the subframes carrying the first control channel do not carry synchronization signals and / or system information.

  It should be noted that this implementation scheme is also applicable to the first control channel in a two level control channel in the following two level control channel scheme.

  Another implementation of this embodiment of the invention may be as follows.

  The user equipment determining the time frequency resource of the control channel, the user equipment determining the time frequency resource of the first control channel, and the user equipment determining the time frequency resource of the second control channel May be.

Optionally, the user equipment determining the time frequency resource of the first control channel
The user equipment determines the time frequency resources of the basic set of first control channels,
The user equipment detects downlink control information based on the basic set of time frequency resources,
The user equipment may determine the time frequency resource of the first control channel extension set according to the detected downlink control information.

Further optionally, the user equipment determining the time frequency resource of the base set of the first control channel
The user device receives system information,
The user equipment comprises determining the time frequency resource of the base set of the first control channel according to the system information.

Alternatively and further optionally, the user equipment determining the time frequency resource of the base set of the first control channel according to the system information,
The user equipment determines the number of symbols occupied by the time-frequency resource of the first set of control channels according to the system information, or the user equipment according to the system information determines the time of the first set of control channels Determining the number of physical resource block pairs occupied by frequency resources, or determining the number of physical resource blocks occupied by time frequency resources of the first set of control channels according to system information; Or the user equipment determines the number of resource blocks occupied by the time frequency resource of the basic set of the first control channel according to the system information, or the user equipment according to the system information the basic set of the first control channel Occupied by the time-frequency resource of Or determining the number of control channel elements CCE corresponding to the time frequency resource of the basic set of the first control channel according to the system information.

Alternatively and further optionally, the user equipment determining the time frequency resource of the basic set of first control channel
The user equipment comprises determining time-frequency resources of the base set of the first control channel according to preset rules.

  Further optionally, the preset rule may be that the time frequency resources of the base set of the first control channel occupy one symbol.

Optionally, it is possible for the user equipment to determine the time frequency resources of the base set of the first control channel:
The user device receives system information,
The number of physical resource block pairs occupied by time-frequency resources of the first set of control channels according to system information, or physical resource blocks occupied by time-frequency resources of the first set of control channels The number, or the number of resource blocks occupied by time-frequency resources of the base set of the first control channel, or the number of subcarriers occupied by the time-frequency resources of the base set of the first control channel, or the first control channel Determine the number of control channel elements corresponding to the time frequency resources of the basic set of
The user equipment comprises determining the number of symbols occupied by the time frequency resource of the first control channel according to a predefined rule. The predefined rule is that the number of symbols occupied by the control channel time frequency resource is a fixed value, or a value in which the number of symbols occupied by the control channel time frequency resource is preset, eg, two It may be a symbol.

Optionally, the user equipment detects downlink control information based on the basic set of time frequency resources, and the user equipment according to the detected downlink control information time of the first control channel extension set Determining frequency resources is
The user equipment detects downlink control information based on the basic set of time frequency resources in subframe n,
The user equipment determines the time frequency resource of the first control channel extension set in subframe n + k according to the downlink control information detected in subframe n, where n is an integer and k is 0 Including that it is a positive integer or more. Optionally, the value of k is equal to one.

Optionally, the method is
The user equipment may determine whether the first control channel extension set exists according to the detected downlink control information, or the user equipment may perform the first control according to the detected downlink control information. The method further includes determining a transmission mode corresponding to the extended set of channels.

  Optionally, the base set is present in all subframes that contain symbols used for downlink transmission.

  Optionally, the extension set is not present in subframes carrying synchronization signals and / or system information.

  It should be noted that this implementation scheme is also applicable to the first control channel in a two level control channel in the following two level control channel scheme.

  Another implementation of this embodiment of the invention may be a two level control channel scheme.

The user equipment may determine the time frequency resource of the control channel, and the user equipment may receive the downlink control information based on the time frequency resource of the control channel,
The user equipment determines the time frequency resource of the first control channel,
The user equipment determines the time frequency resource of the second control channel,
The user apparatus detects first downlink control information based on the time frequency resource of the first control channel,
The user equipment may specifically include detecting the second downlink control information based on the time frequency resource of the second control channel.

  Further optionally, the symbol occupied by the time frequency resource of the first control channel is located before the symbol occupied by the time frequency resource of the second control channel.

Further optionally, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , where i is a positive integer greater than or equal to one, The time frequency resource of the second control channel starts with symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are for transmitting a reference signal The reference signal is used to demodulate the second control channel and / or the data, or the time frequency resource of the first control channel is the symbol l ₀ , ..., l _i-1 Occupy i symbols, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the symbol l _i or the time frequency resource of the second control channel is located on a symbol after the symbol l _i-1, the second control channel and a downlink Li Kudeta is multiplexed on the time frequency resources corresponding to the symbol after the symbol l _i-1.

  Here, the first control channel, the second control channel, and the second control channel and / or the reference signal used to demodulate the data are placed forward, whereby detection is performed quickly And the waiting time can be reduced. Furthermore, the reference signal used to demodulate the second control channel and / or the data is located after the first control channel and before the second control channel, whereby the second control channel And data can be detected quickly. The second control channel and data may be multiplexed, thereby improving multiplexing efficiency and improving spectral efficiency.

Optionally, the user equipment determining the time frequency resource of the first control channel, and the user equipment determining the time frequency resource of the second control channel
The user equipment determines the time frequency resource of the first control channel in the first subframe,
The user equipment determines the time frequency resource of the second control channel in the first subframe,
The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission The uplink transmission corresponding to the symbol includes hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and the downlink transmission corresponding to the symbol included in the first subframe and used for downlink transmission is downlink control Including transmission, downlink data transmission, and transmission of a first reference signal,
The symbols contained in the first subframe and used for downlink transmission are a symbol occupied by the time frequency resource of the first control channel and a symbol occupied by the time frequency resource of the second control channel. Including.

Further optionally, the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1 and the time frequency resource of the second control channel starts with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 or greater The (i + 1) th to the (i + k) th symbols in the first subframe, which are integers, are used to transmit a reference signal, the reference signal is a second control channel and And / or symbols (l-k1) to (l) of symbols used in the first subframe to be used to demodulate data are symbols used for uplink transmission in the first subframe. , L is the number of symbols included in the first subframe, k1 is a positive integer of 1 or more Or the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) symbol in the first subframe, or the time of the second control channel The frequency resource is located on the symbol after the i-th symbol in the first subframe, and the second control channel and the downlink data are transmitted from the i-th symbol in the first subframe. Multiplexed on the time frequency resource corresponding to the (i + k2) symbol in the subframe, where k2 is a positive integer greater than 1 and the (i + k2 + 1) th in the first subframe The symbol is the guard period GP in the first subframe and , And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the first subframe Is the number of symbols contained in.

  The first control channel, the second control channel, and the second control channel and / or the reference signal used to demodulate the data are arranged forward in the first subframe, whereby detection Can be performed quickly and latency can be reduced. Furthermore, the reference signal used to demodulate the second control channel and / or data is located after the first control channel and before the second control channel in the first subframe, Thus, the second control channel and data can be detected quickly. The second control channel and data may be multiplexed, thereby improving multiplexing efficiency and improving spectral efficiency. The design of the first subframe allows for self-contained control and pilot transmission. Specifically, control corresponding to data of the current subframe may be fed back or transmitted within the current subframe without depending on other subframes, whereby the other subframe is It may always be occupied by future services, ie it can better support forward compatibility.

Optionally, the user equipment determining the time frequency resource of the first control channel, and the user equipment determining the time frequency resource of the second control channel
The user equipment determines the time frequency resource of the first control channel in the second subframe,
The user equipment determines that the time frequency resource of the second control channel is not present in the second subframe,
The second subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, is included in the second subframe and is used for downlink transmission The downlink transmission corresponding to the symbol includes downlink control transmission, and the uplink transmission corresponding to the symbol included in the second subframe and used for uplink transmission is transmission of a second reference signal, It includes including uplink data transmission and uplink control transmission.

  Furthermore, the symbol included in the second subframe and used for downlink transmission is the first symbol in the second subframe, and the time frequency resource of the first control channel is the second sub-frame. Occupies the first symbol in the frame.

  Here, the second subframe is mainly used for uplink data transmission, includes a first control channel, and enables scheduling of self-contained uplink data. In particular, uplink data transmissions of subframes are scheduled by using the first downlink control channel, which enables transmission of self-contained control and pilots. Specifically, control corresponding to data of the current subframe may be fed back or transmitted within the current subframe without depending on other subframes, whereby the other subframe is It may always be occupied by future services, ie it can better support forward compatibility.

Further optionally, the user equipment determining the time frequency resource of the second control channel
The user equipment comprises determining time frequency resources of the second control channel according to the first downlink control information.

  Further optionally, the first downlink control information is carried in subframe n and the second control channel is carried in subframe n or the first downlink control information is It is carried in frame n, the second control channel is carried in subframe n + 1, and n is a positive integer. For example, k is equal to one.

  The control channel resources can be changed dynamically, as the time frequency resources of the second control channel are indicated by using the first downlink control information. Thus, control channel resources can be configured according to actual requirements, fixed downlink resources are minimized, dynamic changes in uplink and downlink direction can be applied to more resources, dynamic TDD is better used it can. On the other hand, when the second control channel resource in subframe n + k is indicated by using the first downlink control information in subframe n, the second control channel resource is indicated dynamically, Thus, forward compatibility can be better supported. For example, when subframe n + k is used for future functions, downlink control signaling is used to indicate to the legacy user equipment that the second downlink control channel resource is not present in the subframe. It may support new functionality, while legacy user equipment may also co-exist.

Optionally, the method is
The user apparatus receives the downlink shared channel according to the first downlink control information and the second downlink control information,
The first downlink control information includes information on time frequency resources of the second downlink control channel and / or information on time frequency resources of the downlink shared channel,
The second downlink control information further includes including modulation and coding information of the downlink shared channel.

  The second control channel resource is indicated by using the first control channel, and the first control information and the second control information together schedule the downlink shared channel. Thus, low latency services can be scheduled in short transmission time units or short transmission time intervals, and control channel overhead in short transmission time units or short transmission time intervals can be reduced while low latency services are scheduled quickly Be done.

  Further optionally, the first control channel is demodulated only according to the reference signal carried on the time frequency resource of the first control channel. A self-contained first control channel is possible, so that demodulation of the first control channel does not depend on other resources. This helps to support forward compatibility.

  Referring to the description of the first control channel implemented in the above implementation scheme, the first control channel resource in subframe set 1 is determined according to a preset rule. The control channel resources are predefined or fixed, and the user equipment can detect the downlink control channel and recognize that it can complete the access in the cell. Furthermore, in this embodiment of the present invention, the time frequency resource of the first control channel in subframe set 2 is determined by using downlink control signaling, so that the first control in subframe set 2 is performed. Channel resources can be changed dynamically. Thus, control channel resources can be configured according to actual requirements, fixed downlink resources are minimized, dynamic changes in uplink and downlink direction can be applied to more resources, dynamic TDD is better used it can. On the other hand, because the first control channel resource in subframe set 2 is indicated by using downlink control signaling, forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, downlink control signaling may legacy that the first downlink control channel resource is not present in subframes May be used to indicate to the user equipment of, which may support new functionality, while legacy user equipment may also co-exist.

  The time frequency resources of the base set of the first control channel are determined according to a predetermined rule, and the downlink control information is detected based on the time frequency resource of the base set, and the extended control set of the first control channel is The time frequency resource is determined according to the detected downlink control information. Thus, fixed downlink resources are minimized and used as a basic set of time frequency resources, and dynamic TDD can be better used. On the other hand, because the resources in the extension set are shown dynamically, forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, it is possible for the legacy user equipment that downlink control channel resources in the extension set are not present in the subframes. It may be shown dynamically, so that new functionality can be supported, while legacy user equipment can also co-exist.

  Furthermore, since the transmission mode of the extended set is indicated by using dynamic signaling, it can match the transmission mode of the control channel better. For example, when the enhanced control channel is mainly used for common control signaling, the transmission mode of the enhanced set may be indicated as a distributed mode, or the signaling of the enhanced set is mainly used for signaling dedicated to user equipment. At the same time, the localized transmission mode may be indicated, thereby better matching the control channel transmission mode.

  Referring to FIG. 9, an embodiment of a method for transmitting information in an embodiment of the present invention includes the following steps.

  501. The base station determines the time frequency resource of the control channel.

  502. The base station transmits downlink control information based on the time frequency resource of the control channel.

  In the following, steps 501 and 502 will be described correspondingly by using several specific implementation schemes. It should be noted that some implementation schemes provided by the present invention are not intended to limit the technical solution of the present invention, but are intended to better explain the technical solution. . In the present invention, other realization schemes may also be used for the corresponding description, and thus are not limited here. The implementation scheme of this embodiment of the invention may be as follows.

Optionally, the base station may determine the time frequency resource of the control channel
The base station transmits downlink control signaling, and downlink control signaling is used to determine the time frequency resources of the control channel in subframe n, subframe n is synchronized signal and / or system information Do not carry, including n is an integer of 0 or more.

Further optionally, the base station may transmit downlink control signaling
The base station transmits downlink control signaling in subframe nk, including that k is an integer greater than or equal to zero. For example, k is equal to one.

Further optionally, the base station may determine the time frequency resource of the control channel
The base station determines the time frequency resource of the control channel in subframe n according to a predefined rule, and the predefined rule is that the number of symbols occupied by the time frequency resource of the control channel is a fixed value Or that the number of symbols occupied by the time frequency resource of the control channel may be a preset value, for example, two symbols.

  Subframe n may belong to subframe set 1, and subframe set 1 includes subframes carrying synchronization signals and / or system information.

  Furthermore, the base station may determine the time frequency resource of the control channel in subframe n according to a preset rule, as the time frequency resource of the control channel in subframe n occupies two symbols. The time frequency resource of the control channel in subframe n may occupy N1 symbols, and N1 may be a positive integer greater than or equal to one and less than four.

Further optionally, the control channel comprises control channel set 1 and the base station determines the time frequency resource of the control channel
The base station determines the time frequency resource of control channel set 1;
The method may further include transmitting the control channel based on the time frequency resource of control channel set 1 by using a distributed transmission mode by the base station.

  Here, when the control channel uses the distributed transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean that it is distributed over time frequency resources. For example, specifically, resource element groups corresponding to control channels carrying downlink control information DCI format are distributed over time frequency resources of the control channels. Because the control channel is transmitted in distributed mode, more diversity gain can be obtained and the performance of the control channel is improved.

Alternatively, and further optionally, the control channel comprises control channel set 1 and control channel set 2 and the base station determines the time frequency resource of the control channel
The base station determines the time frequency resource of control channel set 1;
The base station determines the time frequency resource of control channel set 2;
The control channels in control channel set 1 include using the distributed transmission mode, and the control channels in control channel set 2 include using the localized transmission mode.

  Here, when the control channel uses the localized transmission mode, it is assumed that the time frequency resource transmitted on the control channel time frequency resource and occupied by the control channel carrying the downlink control information DCI format is the control channel It may mean to be localized on time frequency resources. For example, specifically, a resource element group corresponding to a control channel carrying downlink control information DCI format is localized on a part of time frequency resources of the control channel. Since the control channel is transmitted in localized mode, beamforming transmission mode can be used, the control channel is concentrated in the corresponding beam direction, and the control channel coverage is improved. Furthermore, localized transmission allows the user to combine reference signals on localized resources to perform channel estimation, which improves the performance of channel estimation and control channel based on beam transmission mode Performance is improved.

  Another implementation of this embodiment of the invention may be as follows.

In this step, the base station determines the time frequency resource of the control channel,
The base station determines the time frequency resources of the basic set of control channels,
The base station may transmit downlink control information based on a basic set of time frequency resources, and the downlink control information may further include including information on time frequency resources of the extended set of control channels.

More optionally, the method is
The base station transmits system information, the system information further including including information on time frequency resources of a basic set of control channels.

More optionally, the system information includes information about time frequency resources of a basic set of control channels:
The system information includes information on the number of symbols occupied by time-frequency resources of the basic set of control channels, or information on the number of physical resource block pairs where the system information is occupied by time-frequency resources of the basic set of control channels Or system information includes information about the number of physical resource blocks occupied by time frequency resources of the basic set of control channels, or resources where system information is occupied by time frequency resources of the basic set of control channels Including information on the number of blocks, or system information includes information on the number of subcarriers occupied by time-frequency resources of the basic set of control channels, or system information includes time-frequency information of the basic set of control channels. Comprising including information about the control channel element CCE number corresponding to the over scan.

Further optionally, it is possible for the base station to determine the time frequency resources of the basic set of control channels:
The base station may determine the time frequency resources of the basic set of control channels according to preset rules.

  Further optionally, the preset rule may be that the time frequency resources of the basic set of control channels occupy one symbol.

Further optionally, the base station transmits downlink control information based on a basic set of time frequency resources, wherein the downlink control information includes information about time frequency resources of the extended set of control channels;
The base station transmits downlink control information based on the basic set of time-frequency resources in subframe n, and the downlink control information is on the time-frequency resources of the expanded set of control channels in subframe n + k Contains the information of
n is an integer, including k being a positive integer of 0 or more. For example, the value of k is equal to one.

Optionally, the method is
The downlink control information further includes information indicating whether or not an extended set of control channels is present, or the downlink control information further includes information indicating a transmission mode corresponding to the extended set of control channels. .

  Optionally, the base set is present in all subframes that contain symbols used for downlink transmission.

  Optionally, the extension set is not present in subframes carrying synchronization signals and / or system information.

  Another implementation of this embodiment of the invention may be as follows.

In this step, the base station determines the time frequency resource of the control channel,
The base station transmits downlink control signaling, the downlink control signaling being used to determine the time frequency resource of the first control channel in subframe n, subframe n being a synchronization signal and / or The system information may not be conveyed, and n may further include an integer of 0 or more.

Optionally, the base station may transmit downlink control information signaling
The base station transmits downlink control signaling in subframe nk, including that k is an integer greater than or equal to zero. For example, k is equal to one.

Optionally, the base station determines the time frequency resource of the first control channel
The base station determines the time frequency resource of the first control channel in subframe n according to a predefined rule,
Subframe n includes carrying synchronization signals and / or system information.

Alternatively, optionally, the first control channel comprises a first control channel set 1 and the base station determines the time frequency resource of the first control channel
The base station determines the time frequency resource of the first control channel set 1;
The base station includes transmitting the first control channel based on the time frequency resource of the first control channel set 1 by using the distributed transmission mode.

  Here, the first control channel using the distributed transmission mode is occupied by the first control channel transmitted on the time frequency resource of the first control channel and carrying the downlink control information DCI format. It may mean that the time frequency resources are distributed over the time frequency resources of the control channel. For example, specifically, resource element groups corresponding to control channels carrying downlink control information DCI format are distributed over time frequency resources of the control channels. As the control channel is transmitted in distributed mode, more diversity gain can be obtained and the performance of the first control channel is improved.

Alternatively, optionally, the first control channel includes the first control channel set 1 and the first control channel set 2 and the base station determines the time frequency resource of the first control channel ,
The base station determines the time frequency resource of the first control channel set 1;
The base station determines the time frequency resource of the first control channel set 2;
The first control channel in the first control channel set 1 uses the distributed transmission mode, and the first control channel in the first control channel set 2 includes using the localized transmission mode .

  Here, when the first control channel uses the localized transmission mode, it is assumed that the time frequency occupied by the first control channel transmitted on the control channel time frequency resource and carrying the downlink control information DCI format It may mean that the resources are localized on the time frequency resources of the control channel. For example, specifically, a resource element group corresponding to a control channel carrying downlink control information DCI format is localized on a part of time frequency resources of the control channel. Since the control channel is transmitted in localized mode, beamforming transmission mode can be used, the control channel is concentrated in the corresponding beam direction, and the control channel coverage is improved. Furthermore, in localized transmission, the user can combine reference signals on localized resources to perform channel estimation, thereby improving the performance of channel estimation, the first based on beam transmission mode Control channel performance is improved.

Furthermore, the method is
The base station transmits downlink control information in subframe n, the downlink control information including information on time frequency resources of the first control channel set 1 in subframe n + k, n is an integer , And further including that k is a positive integer of 1 or more.

  FIG. 10 provides a specific example. In FIG. 10, the time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, i is equal to 2, and the first control channel is a first control channel set 1 (using distributed transmission mode) and a first control channel set 2 (localization Using the transmission mode, the third symbol in the first subframe is used to transmit a reference signal, and the reference signal is for demodulating a second control channel and / or data. And the time frequency resource of the second control channel starts with the fourth symbol in the first subframe and the thirteenth symbol in the first subframe is used as GP and the first Sufferie The fourteenth symbol in the frame is used for uplink transmission. In FIG. 5, the first control channel corresponding to UE1 indicates the second control channel resource corresponding to UE1, and the second control channel corresponding to UE1 is the downlink shared share of UE1 for transmitting data. The channel may be scheduled, and both the first control channel and the second control channel corresponding to UE1 and UE2 may use the beam based transmission mode, and the first control channel corresponding to UE1 is localized Use typed transmission mode.

  Another implementation of this embodiment of the invention may be as follows.

In this step, the base station determines the time frequency resource of the control channel,
The method may further include the base station determining time frequency resources of the first control channel.

Furthermore, it is possible for the base station to determine the time frequency resource of the first control channel:
The base station determines the time frequency resources of the basic set of first control channels,
The base station transmits downlink control information based on the basic set of time frequency resources, wherein the downlink control information includes including information about time frequency resources of the first control channel extension set.

Optionally, the method is
The base station transmits system information, the system information further including including information about time frequency resources of the first set of control channels.

Furthermore, it is specifically that the system information includes information about time frequency resources of the basic set of the first control channel.
The system information comprises information on the number of symbols occupied by the time frequency resource of the first set of control channels, or the physical information the system information is occupied by the time frequency resources of the first set of control channel Including information on the number of block pairs, or including information on the number of physical resource blocks occupied by time frequency resources of the first set of control channels, or system information on the first control channel Including information on the number of resource blocks occupied by the time-frequency resource of the basic set of H, or including information on the number of subcarriers occupied by the time-frequency resource of the first set of basic control channels. Or system information is the first It is to include information about the control channel element CCE number corresponding to the time-frequency resources of the base set of channels.

Optionally, it is possible for the base station to determine the time frequency resources of the basic set of control channels:
The base station may determine time-frequency resources of the base set of the first control channel according to preset rules.

  Furthermore, the preset rule is that the time frequency resources of the basic set of the first control channel occupy one symbol.

Optionally, the base station transmits downlink control information based on the basic set of time frequency resources, wherein the downlink control information includes information about time frequency resources of the first control channel extension set Is
The base station transmits downlink control information based on the basic set of time-frequency resources in subframe n, the downlink control information is time of the extended set of the first control channel in subframe n + k It includes information on frequency resources, n is an integer, and k is a positive integer of 0 or more. For example, the value of k is equal to one.

Optionally, the method is
The downlink control information includes information indicating that the first control channel extension set is present, or the downlink control information includes information indicating a transmission mode corresponding to the first control channel extension set. Further include.

  Optionally, the base set is present in all subframes that contain symbols used for downlink transmission.

  Optionally, the extension set is not present in subframes carrying synchronization signals and / or system information.

  FIG. 11 provides a specific example. In FIG. 11, the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, i is equal to 2, and the first control channel includes a base set of the first control channel and an extended set of the first control channel; The resources in the extension set may be indicated by using the first control channel in the previous subframe, and the third symbol in the first subframe is used to transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data, and the time frequency resource of the second control channel starts at the fourth symbol in the first subframe and the first Subf 13 symbols in the over arm is used as GP, the 14th symbol of the first subframe is used for uplink transmission. In FIG. 6, the resources in the extension set are shown dynamically, so that forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, it may be moved to the legacy user equipment that downlink control channel resources in the extension set are not present in the subframes. It may be shown that it can support new features, while legacy user equipment can also co-exist.

  Another implementation of this embodiment of the invention may be a two level control channel scheme.

The base station may determine the time frequency resource of the control channel, and the base station may transmit downlink control information based on the time frequency resource of the control channel,
The base station determines the time frequency resource of the first control channel,
The base station determines the time frequency resource of the second control channel,
The base station detects the first downlink control information based on the time frequency resource of the first control channel,
The base station may specifically include detecting the second downlink control information based on the time frequency resource of the second control channel.

  Further optionally, the symbol occupied by the time frequency resource of the first control channel is located before the symbol occupied by the time frequency resource of the second control channel.

Further optionally, the time frequency resource of the first control channel occupies i symbols corresponding to the symbols l ₀ , ..., l _{i -1} , where i is a positive integer greater than or equal to one, The time frequency resource of the second control channel starts with symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are for transmitting a reference signal The reference signal is used to demodulate the second control channel and / or the data, or the time frequency resource of the first control channel is the symbol l ₀ , ..., l _i-1 Occupy i symbols, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the symbol l _i or the time frequency resource of the second control channel is located on a symbol after the symbol l _i-1, the second control channel and a downlink Li Kudeta is multiplexed on the time frequency resources corresponding to the symbol after the symbol l _i-1.

  Here, the first control channel, the second control channel, and the second control channel and / or the reference signal used to demodulate the data are placed forward, whereby detection is performed quickly And the waiting time can be reduced. Furthermore, the reference signal used to demodulate the second control channel and / or the data is located after the first control channel and before the second control channel, whereby the second control channel And data can be detected quickly. The second control channel and data may be multiplexed, thereby improving multiplexing efficiency and improving spectral efficiency.

Optionally, the base station determining the time frequency resource of the first control channel, and the base station determining the time frequency resource of the second control channel
The base station determines the time frequency resource of the first control channel in the first subframe,
The base station determines the time frequency resource of the second control channel in the first subframe,
The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission The uplink transmission corresponding to the symbol includes hybrid automatic retransmission request acknowledgment ACK-ACK transmission, and the downlink transmission corresponding to the symbol included in the first subframe and used for downlink transmission is downlink control Including transmission, downlink data transmission, and transmission of a first reference signal,
The symbols contained in the first subframe and used for downlink transmission are a symbol occupied by the time frequency resource of the first control channel and a symbol occupied by the time frequency resource of the second control channel. Including.

Further optionally, the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1 and the time frequency resource of the second control channel starts with the (i + k + 1) symbol in the first subframe, and k is greater than or equal to 1 or greater The (i + 1) th to the (i + k) th symbols in the first subframe, which are integers, are used to transmit a reference signal, the reference signal is a second control channel and And / or symbols (l-k1) to (l) of symbols used in the first subframe to be used to demodulate data are symbols used for uplink transmission in the first subframe. , L is the number of symbols included in the first subframe, k1 is a positive integer of 1 or more Or the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe , I is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + 1) symbol in the first subframe, or the time of the second control channel The frequency resource is located on the symbol after the i-th symbol in the first subframe, and the second control channel and the downlink data are transmitted from the i-th symbol in the first subframe. Multiplexed on the time frequency resource corresponding to the (i + k2) symbol in the subframe, where k2 is a positive integer greater than 1 and the (i + k2 + 1) th in the first subframe The symbol is the guard period GP in the first subframe and , And the (i + k2 + 2) th symbol to the lth symbol in the first subframe are symbols used for uplink transmission in the first subframe, and l is the first subframe Is the number of symbols contained in.

  The first control channel, the second control channel, and the second control channel and / or the reference signal used to demodulate the data are arranged forward in the first subframe, whereby detection Can be performed quickly and latency can be reduced. Furthermore, the reference signal used to demodulate the second control channel and / or data is located after the first control channel and before the second control channel in the first subframe, Thus, the second control channel and data can be detected quickly. The second control channel and data may be multiplexed, thereby improving multiplexing efficiency and improving spectral efficiency. The design of the first subframe allows for self-contained control and pilot transmission. Specifically, control corresponding to data of the current subframe may be fed back or transmitted within the current subframe without depending on other subframes, whereby the other subframe is It may always be occupied by future services, ie it can better support forward compatibility.

Optionally, the base station determining the time frequency resource of the first control channel, and the base station determining the time frequency resource of the second control channel
The base station determines the time frequency resource of the first control channel in the second subframe,
The base station determines that the time frequency resource of the second control channel is not present in the second subframe,
The second subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, is included in the second subframe and is used for downlink transmission The downlink transmission corresponding to the symbol includes downlink control transmission, and the uplink transmission corresponding to the symbol included in the second subframe and used for uplink transmission is transmission of a second reference signal, It includes including uplink data transmission and uplink control transmission.

  Furthermore, the symbol included in the second subframe and used for downlink transmission is the first symbol in the second subframe, and the time frequency resource of the first control channel is the second sub-frame. Occupies the first symbol in the frame.

  Here, the second subframe is mainly used for uplink data transmission, includes a first control channel, and enables scheduling of self-contained uplink data. In particular, uplink data transmissions of subframes are scheduled by using the first downlink control channel, which enables transmission of self-contained control and pilots. Specifically, control corresponding to data of the current subframe may be fed back or transmitted within the current subframe without depending on other subframes, whereby the other subframe is It may always be occupied by future services, ie it can better support forward compatibility.

  Further optionally, the base station detects the first downlink control information based on the time frequency of the first control channel, and the first downlink control information is for the time frequency of the second control channel. Contains information on

  Furthermore, the first downlink control information is carried in subframe n and the second control channel is carried in subframe n, or the first downlink control information is carried in subframe n. , And the second control channel is carried in subframe n + k, where k is a positive integer greater than or equal to one. For example, k is equal to 1 and n is a positive integer.

  The control channel resources can be changed dynamically, as the time frequency resources of the second control channel are indicated by using the first downlink control information. Thus, control channel resources can be configured according to actual requirements, fixed downlink resources are minimized, dynamic changes in uplink and downlink direction can be applied to more resources, dynamic TDD is better used it can. On the other hand, when the second control channel resource in subframe n + k is indicated by using the first downlink control information in subframe n, the second control channel resource is indicated dynamically, Thus, forward compatibility can be better supported. For example, when subframe n + k is used for future functions, downlink control signaling is used to indicate to the legacy user equipment that the second downlink control channel resource is not present in the subframe. It may support new functionality, while legacy user equipment may also co-exist.

Optionally, the method is
The base station transmits the downlink shared channel,
The first downlink control information includes information on time frequency resources of the second downlink control channel and / or information on time frequency resources of the downlink shared channel,
The second downlink control information further includes including modulation and coding information of the downlink shared channel.

  The second control channel resource is indicated by using the first control channel, and the first control information and the second control information together schedule the downlink shared channel. Thus, low latency services can be scheduled in short transmission time units or short transmission time intervals, and control channel overhead in short transmission time units or short transmission time intervals can be reduced while low latency services are scheduled quickly Be done.

  Further optionally, the base station transmits a reference signal on time frequency resources of the first control channel, the reference signal being used to demodulate the first control channel. A self-contained first control channel is possible, so that demodulation of the first control channel does not depend on other resources. This helps to support forward compatibility.

  Referring to the description of the first control channel implemented in the above implementation scheme, the first control channel resource in subframe set 1 is determined according to a preset rule. The control channel resources are predefined or fixed, and the user equipment can detect the downlink control channel and recognize that it can complete the access in the cell. Furthermore, in this embodiment of the present invention, the time frequency resource of the first control channel in subframe set 2 is determined by using downlink control signaling, so that the first control in subframe set 2 is performed. Channel resources can be changed dynamically. Thus, control channel resources can be configured according to actual requirements, fixed downlink resources are minimized, dynamic changes in uplink and downlink direction can be applied to more resources, dynamic TDD is better used it can. On the other hand, because the first control channel resource in subframe set 2 is indicated by using downlink control signaling, forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, downlink control signaling may legacy that the first downlink control channel resource is not present in subframes May be used to indicate to the user equipment of, which may support new functionality, while legacy user equipment may also co-exist.

  The time frequency resources of the base set of the first control channel are determined according to a predetermined rule, and the downlink control information is detected based on the time frequency resource of the base set, and the extended control set of the first control channel is The time frequency resource is determined according to the detected downlink control information. Thus, fixed downlink resources are minimized and used as a basic set of time frequency resources, and dynamic TDD can be better used. On the other hand, because the resources in the extension set are shown dynamically, forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, it is possible for the legacy user equipment that downlink control channel resources in the extension set are not present in the subframes. It may be shown dynamically, so that new functionality can be supported, while legacy user equipment can also co-exist.

  Furthermore, since the transmission mode of the extended set is indicated by using dynamic signaling, it can match the transmission mode of the control channel better. For example, when the enhanced control channel is mainly used for common control signaling, the transmission mode of the enhanced set may be indicated as a distributed mode, or the signaling of the enhanced set is mainly used for signaling dedicated to user equipment. At the same time, the localized transmission mode may be indicated, thereby better matching the control channel transmission mode.

Referring to FIG. 12, a schematic diagram of an embodiment of the device in an embodiment of the present invention is:
A determination module 601 configured to determine the position of the reference signal;
And a transceiver module 602 configured to transmit or receive the reference signal based on the determined position of the reference signal.

  In this embodiment, for the explanation and description of terms used in this embodiment, and the detailed explanation for the determination module 601 and the transceiver module 602, the above-mentioned steps 101, 102, steps 201 to 204 and steps Reference is made to step 301 to step 304. Details will not be described again here.

Referring to FIG. 13, a schematic diagram of an embodiment of a user equipment in an embodiment of the present invention is:
A determination module 701 configured to determine time frequency resources of the control channel;
And a receiver module 702 configured to receive downlink control information based on the time frequency resource of the control channel.

  In this embodiment, reference is made to steps 401 and 402 above for a detailed description of the determination module 701 and the transceiver module 702. Details will not be described again here.

Referring to FIG. 14, a schematic diagram of an embodiment of a base station in an embodiment of the present invention is:
A determination module 801 configured to determine a time frequency resource of the control channel;
And a transmitting module 802 configured to transmit downlink control information based on the time frequency resource of the control channel.

  In this embodiment, reference is made to steps 501 and 502 above for a detailed description of the determination module 801 and the transmission module 802. Details will not be described again here.

  For convenience and brevity of description, reference may be made to the corresponding processes in the embodiments of the method described above for the detailed operation processes of the aforementioned systems, devices and units, the details shall not be described again here. Can be clearly understood by those skilled in the art.

  It should be understood that, in some embodiments provided in this application, the disclosed systems, devices and methods may be implemented in other manners. For example, the described apparatus embodiments are merely examples. For example, unit division is merely logical function division, and may be another division in an actual implementation scheme. For example, multiple units or components may be combined, integrated into another system, or some features may be ignored or not performed. Furthermore, the displayed or described mutual coupling or direct coupling or communication connection may be realized by using several interfaces. The indirect coupling or communication connection between the devices or units may be realized electronically, mechanically or otherwise.

  The units described as separate parts may or may not be physically separate, and the parts labeled as units may or may not be physical units, and one unit It may be located at a location or may be distributed to multiple network units. Some or all of the units may be selected depending on the actual requirements to achieve the purpose of the solution of the embodiment.

  Furthermore, the functional units in the embodiments of the present invention may be integrated into one processing unit, or each of the units may physically exist alone, or two or more units may be combined into one unit. Integrated. The integrated unit may be realized in the form of hardware or may be realized in the form of a software functional unit.

  When the integrated unit is realized in the form of a software functional unit and sold or used as a separate product, the integrated unit may be stored on a computer readable storage medium. Based on such an understanding, the technical solution of the present invention may be realized essentially, or all or part of the technical solution or the part contributing to the prior art is realized in the form of a software product. Good. The software product is stored in a storage medium and instructs a computing device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present invention. Including some instructions for. The aforementioned storage medium can store program code such as USB flash drive, removable hard disk, read only memory (ROM), random access memory (RAM), magnetic disk or optical disk. Including some media.

  The foregoing examples are intended merely to illustrate the technical solutions of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can continue to use the techniques described in the above embodiments without departing from the spirit and scope of the technical solutions of the embodiments of the present invention. It should be understood that modifications may be made to the solution, or equivalent substitutions may be made to some of its technical features.

Optionally, whether the first device receives the first reference signal based on the position of the first reference signal and transmits the second reference signal based on the position of the second reference signal Alternatively, the first device transmits the first reference signal based on the position of the first reference signal and receives the second reference signal based on the position of the second reference signal.

FIG. 10 provides a specific example. In FIG. 10, the time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, i is equal to 2, and the first control channel is a first control channel set 1 (using distributed transmission mode) and a first control channel set 2 (localization Using the transmission mode, the third symbol in the first subframe is used to transmit a reference signal, and the reference signal is for demodulating a second control channel and / or data. And the time frequency resource of the second control channel starts with the fourth symbol in the first subframe and the thirteenth symbol in the first subframe is used as GP and the first Sufferie The fourteenth symbol in the frame is used for uplink transmission. In FIG. 10 , the first control channel corresponding to UE1 indicates the second control channel resource corresponding to UE1, and the second control channel corresponding to UE1 is the downlink shared share of UE1 for transmitting data. The channel may be scheduled, and both the first control channel and the second control channel corresponding to UE1 and UE2 may use the beam based transmission mode, and the first control channel corresponding to UE1 is localized Use typed transmission mode.

FIG. 11 provides a specific example. In FIG. 11, the time frequency resource of the first control channel occupies i symbols in the first subframe corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, i is equal to 2, and the first control channel includes a base set of the first control channel and an extended set of the first control channel; The resources in the extension set may be indicated by using the first control channel in the previous subframe, and the third symbol in the first subframe is used to transmit the reference signal The reference signal is used to demodulate the second control channel and / or the data, and the time frequency resource of the second control channel starts at the fourth symbol in the first subframe and the first Subf 13 symbols in the over arm is used as GP, the 14th symbol of the first subframe is used for uplink transmission. In FIG. 11 , the resources in the extension set are shown dynamically, so that forward compatibility can be better supported. For example, when some subframes in subframe set 2 are used dynamically for future functions, it may be moved to the legacy user equipment that downlink control channel resources in the extension set are not present in the subframes. It may be shown that it can support new features, while legacy user equipment can also co-exist.

The base station may determine the time frequency resource of the control channel, and the base station may transmit downlink control information based on the time frequency resource of the control channel,
The base station determines the time frequency resource of the first control channel,
The base station determines the time frequency resource of the second control channel,
The base station transmits the first downlink control information based on the time frequency resource of the first control channel,
The base station may specifically include transmitting the second downlink control information based on the time frequency resource of the second control channel.

In this embodiment, reference is made to steps 401 and 402 above for a detailed description of the determining module 701 and the receiving module 702. Details will not be described again here.

Claims (158)

A method for transmitting and receiving information,
Determining the position of the reference signal by the first device;
Transmitting or receiving the reference signal by the first device based on the determined position of the reference signal. The reference signal includes a first reference signal and a second reference signal, and the step of determining the position of the reference signal by the first device is:
Determining the position of the first reference signal by the first device, wherein the first reference signal is used for downlink data demodulation;
Determining the position of the second reference signal by the first device, wherein the second reference signal is used for uplink data demodulation,
The method according to claim 1, wherein the time domain position of the first reference signal is the same as the time domain position of the second reference signal.   The method according to claim 2, wherein the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.   The first reference signal is conveyed in a first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit, The second reference signal is carried in a second transmission unit, and the position of the second reference signal is the position of the second reference signal in the second transmission unit, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal, specifically, the time domain position of the first reference signal in the first transmission unit is the The same as the time domain position of the second reference signal in two transmission units, and the duration of the first transmission unit is equal to the duration of the second transmission unit. The method described in.   The first reference signal is conveyed in a first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit, The second reference signal is carried in a second transmission unit, and the position of the second reference signal is the position of the second reference signal in the second transmission unit, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is within the second transmission unit And the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal. Frequency domain position of the first reference signal within a transmission unit of The frequency domain position of the second reference signal in the second transmission unit is the same, and the duration of the first transmission unit is equal to the duration of the second transmission unit. Item 3. The method according to Item 3.   The first reference signal is located on a third symbol in the first transmission unit, and the second reference signal is located on a third symbol in the second transmission unit. A method according to claim 4 or 5.   The first reference signal is carried in a first sub-frame, and the position of the first reference signal is the position of the first reference signal in the first sub-frame; 2 reference signals are carried in a second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is within the second subframe And the number of symbols used for downlink transmission in the first subframe is the same as the time domain position of the second reference signal in the first subframe. More than the number of symbols used It said second number of symbols used for downlink transmission in a subframe, the is smaller than the second number of symbols used for uplink transmission in the sub-frame A method according to claim 2.   The first reference signal is carried in a first sub-frame, and the position of the first reference signal is the position of the first reference signal in the first sub-frame; 2 reference signals are carried in a second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is within the second subframe And the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal. Said first in a sub-frame of The frequency domain position of the reference signal is the same as the frequency domain position of the second reference signal in the second subframe, and the number of symbols used for downlink transmission in the first subframe Is greater than the number of symbols used for uplink transmission in the first subframe, and the number of symbols used for downlink transmission in the second subframe is uplink in the second subframe The method of claim 3, wherein the number is less than the number of symbols used for link transmission.   The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission Uplink transmissions corresponding to selected symbols include hybrid automatic repeat request acknowledgment ACK-ACK transmissions, and downlink transmissions corresponding to symbols contained in the first subframe and used for downlink transmissions are: The second sub-frame includes a downlink control transmission, a downlink data transmission, and the transmission of the first reference signal, and the second subframe includes a symbol used for the downlink transmission, a guard period GP, and an uplink transmission. Downlink transmission corresponding to the symbols included in the second subframe and used for downlink transmission, Uplink transmission, including link control transmission, corresponding to a symbol included in the second subframe and used for uplink transmission, includes uplink control transmission, uplink data transmission, and the second reference signal. The method according to claim 7 or 8, comprising the step of:   The first subframe starts with a symbol included in the first subframe and used for downlink transmission, and ends with a symbol included in the first subframe and used for uplink transmission, The second subframe starts with a symbol included in the second subframe and used for downlink transmission, and ends with a symbol included in the second subframe and used for uplink transmission. 10. The method of claim 9.   Specifically, the time domain position of the first reference signal in the first subframe is the same as the time domain position of the second reference signal in the second subframe. The index of the symbol occupied by the first reference signal in the first subframe is the same as the index of the symbol occupied by the second reference signal in the second subframe, A method according to any one of claims 7 to 10.   The first reference signal is located on a third symbol in the first subframe, and the second reference signal is located on a third symbol in the second subframe. A method according to claim 10. The first device is a user device, and the step of transmitting or receiving the reference signal based on the determined position of the reference signal by the first device is:
Receiving, by the user device, the first reference signal based on the position of the first reference signal;
13. The method according to any one of claims 2 to 12, comprising transmitting the second reference signal by the user device based on the position of the second reference signal. The first device is a base station, and the step of transmitting or receiving the reference signal based on the determined position of the reference signal by the first device is:
Transmitting the first reference signal by the base station based on the position of the first reference signal;
13. The method according to any one of claims 2-12, comprising: receiving by the base station the second reference signal based on the position of the second reference signal. A method for receiving information,
Determining the time frequency resource of the control channel by the user equipment;
Receiving downlink control information by the user equipment based on the time frequency resource of the control channel. The steps of determining time frequency resources of a control channel by the user equipment, and receiving downlink control information by the user equipment based on the time frequency resources of the control channel,
Determining time frequency resources of a first control channel by the user equipment;
Determining time frequency resources of a second control channel by the user equipment;
Detecting, by the user equipment, first downlink control information based on the time frequency resource of the first control channel;
Detecting, by the user equipment, second downlink control information based on the time frequency resource of the second control channel.   The method according to claim 16, wherein a symbol occupied by the time frequency resource of the first control channel is located before a symbol occupied by the time frequency resource of the second control channel. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the present invention starts with the symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are used to transmit the reference signal The method according to claim 17, wherein the reference signal is used to demodulate the second control channel and / or data. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the invention starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second The method according to claim 17, wherein control channel and downlink data are multiplexed on a time frequency resource corresponding to the symbol after the symbol l _i-1 . The steps of determining the time frequency resource of the first control channel by the user equipment, and determining the time frequency resource of the second control channel by the user equipment,
Determining by the user equipment the time frequency resource of the first control channel in a first subframe;
Determining, by the user equipment, time frequency resources of the second control channel in the first subframe.
The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission Uplink transmissions corresponding to selected symbols include hybrid automatic repeat request acknowledgment ACK-ACK transmissions, and downlink transmissions corresponding to symbols contained in the first subframe and used for downlink transmissions are: Including downlink control transmission, downlink data transmission, and transmission of a first reference signal,
The symbols included in the first subframe and used for downlink transmission are determined by the symbols occupied by the time frequency resource of the first control channel and the time frequency resource of the second control channel. 17. A method according to claim 16, comprising an occupied symbol.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + k + 1) th symbol in the first subframe, and k is greater than or equal to 1 A positive integer, and the (i + 1) th to the (i + k) th symbols in the first subframe are used to transmit a reference signal, the reference signal being the The (l-k1) th symbol to the lth symbol in the first subframe are used to demodulate two control channels and / or data, and the uplink transmission is performed in the first subframe. Symbol used in the first sub-frame, and l is a symbol used for The method according to claim 20, wherein the symbol number is k1, and k1 is a positive integer of 1 or more.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer of 1 or more, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe, or the second control The time frequency resource of the channel is located on a symbol after the ith symbol in the first subframe, and the second control channel and downlink data are in the first subframe. From the ith symbol to the time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and the first subframe The (i + k2 + 1) thin Bol is a guard period GP in the first subframe, and the (i + k2 + 2) th symbol to the lth symbol in the first subframe are in the first subframe. The method according to claim 20, wherein the symbol used for uplink transmission is l and the number of symbols included in the first subframe. The steps of determining the time frequency resource of the first control channel by the user equipment, and determining the time frequency resource of the second control channel by the user equipment,
Determining by the user equipment the time frequency resource of the first control channel in a second subframe;
Determining by the user equipment that time frequency resources of the second control channel are not present in the second subframe, the second subframe being a symbol used for downlink transmission A downlink transmission corresponding to a symbol used for uplink transmission, including a guard period GP, and a symbol used for uplink transmission, and included in the second subframe and used for downlink control transmission Uplink transmission corresponding to a symbol included in the second subframe and used for uplink transmission includes transmission of the second reference signal, uplink data transmission, and uplink control transmission. 17. The method of claim 16 comprising.   A symbol included in the second subframe and used for downlink transmission is a first symbol in the second subframe, and the time frequency resource of the first control channel is the first symbol. 24. The method of claim 23, wherein the first symbol in two subframes is occupied. The step of determining the time frequency resource of the second control channel by the user equipment comprises:
The method according to any one of claims 16 to 24, comprising the step of determining the time frequency resource of the second control channel according to the first downlink control information by the user equipment. The first downlink control information may be carried in subframe n, and the second control channel may be carried in subframe n, or the first downlink control information may be subframe n and the second control channel is carried in subframe n + 1,
26. The method of claim 25, wherein n is a positive integer. And receiving the downlink shared channel according to the first downlink control information and the second downlink control information by the user apparatus.
The first downlink control information includes information on the time frequency resource of the second downlink control channel and / or information on the time frequency resource of the downlink shared channel,
The method according to any one of claims 16 to 26, wherein the second downlink control information comprises modulation and coding information of the downlink shared channel.   28. The method according to any one of claims 16 to 27, wherein the first control channel is demodulated according to a reference signal carried on the time frequency resource of the first control channel. The step of determining the time frequency resource of the control channel by the user equipment comprises:
Determining the time frequency resource of the control channel in subframe n by the user equipment;
If the sub-frame n belongs to the sub-frame set 1, the step of determining the time-frequency resource of the control channel in the sub-frame n according to a preset rule by the user apparatus, or the sub-frame n is Determining the time-frequency resource of the control channel in the subframe n according to downlink control signaling by the user equipment if belonging to the subframe set 2; the subframe set 1 comprises a synchronization signal And / or includes subframes carrying system information, and the subframe set 2 does not include subframes carrying synchronization signals and / or system information,
The method according to claim 15, wherein n is an integer of 0 or more. Determining the time frequency resource of the control channel in the subframe n according to downlink control signaling by the user equipment,
Determining by the user equipment the time frequency resource of the control channel in the subframe n according to downlink control signaling carried in the subframe nk, where k is an integer greater than or equal to 0 30. The method of claim 29, comprising: Determining the time frequency resource of the control channel in the subframe n according to downlink control signaling by the user equipment,
The method according to claim 29, comprising determining, by the user equipment, the time frequency resource of the control channel in the subframe n according to downlink control signaling carried in the subframe n-1.   The method according to claim 29, wherein the time frequency resource of the control channel in the subframe n occupies two symbols in time domain. The control channel includes a control channel set 1, and the step of determining the time frequency resource of the control channel by the user equipment comprises:
Determining, by the user equipment, a time frequency resource of the control channel set 1;
16. The method of claim 15, wherein the control channels in the control channel set 1 use a distributed transmission mode. The control channel includes a control channel set 1 and a control channel set 2, and the step of determining the time frequency resource of the control channel by the user apparatus is
Determining the time frequency resource of the control channel set 1 by the user equipment;
Determining, by the user equipment, time-frequency resources of the control channel set 2, the control channel in the control channel set 1 using a distributed transmission mode, and the control channel in the control channel set 2. The method of claim 15, wherein the control channel uses a localized transmission mode. Determining the time frequency resource of the control channel set 1 by the user equipment,
Detecting downlink control information in a subframe n by the user apparatus;
Determining the time frequency resource of the control channel set 1 in subframe n + k according to the downlink control information detected in the subframe n by the user apparatus, where n is an integer, 35. The method of claim 34, comprising the steps of: k is a positive integer greater than or equal to one.   Determining the time frequency resource of the control channel set 2 in the subframe n + k by the user device based on the time frequency resource of the control channel set 1 in the subframe n + k 36. The method of claim 35, comprising.   37. A method according to any of the claims 34 to 36, wherein the sub-frames carrying the control channel do not carry synchronization signals and / or system information. The step of determining the time frequency resource of the control channel by the user equipment comprises:
Determining, by the user equipment, time-frequency resources of the basic set of control channels;
Detecting the downlink control information by the user equipment based on the time-frequency resource of the basic set;
Determining, by the user equipment, time-frequency resources of an extended set of control channels according to the detected downlink control information. Determining, by the user equipment, time-frequency resources of the basic set of control channels;
Receiving system information by the user device;
39. The method according to claim 38, comprising: determining, by the user equipment, the time frequency resource of the base set of the control channel according to the system information. The step of determining the time-frequency resource of the basic set of control channels according to the system information by the user equipment comprises:
Determining by the user device the number of symbols occupied by the time frequency resource of the basic set of control channels according to the system information, or by the user device according to the system information, the base of the control channel Determining the number of physical resource blocks occupied by the set of time frequency resources, or the number of control channel elements CCE corresponding to the time frequency resources of the basic set of the control channel according to the system information by the user equipment 40. The method of claim 39, comprising: determining. Determining, by the user equipment, time-frequency resources of the basic set of control channels;
39. A method according to claim 38, comprising: determining, by the user equipment, the time frequency resource of the base set of the control channel according to preset rules.   42. The method of claim 41, wherein the pre-set rule is that the time frequency resources of the base set of control channels occupy one symbol. Determining, by the user equipment, time-frequency resources of the basic set of control channels;
Receiving system information by the user device;
Control channel element corresponding to the number of physical resource blocks occupied by the time frequency resource of the basic set of the control channel according to the system information by the user apparatus, or the time frequency resource of the basic set of the control channel Determining the number,
39. The method according to claim 38, comprising: determining by the user equipment the number of symbols occupied by the time frequency resource of the control channel according to predefined rules. Detecting, by the user equipment, the downlink control information based on the time-frequency resource of the basic set; and, according to the detected downlink control information, by the user equipment, of the extended set of control channels. The step of determining time frequency resources
Detecting, by the user equipment, the downlink control information based on time-frequency resources of the basic set in a subframe n;
Determining the time frequency resource of the extended set of the control channel in subframe n + k according to the downlink control information detected in subframe n by the user equipment, where n is an integer 39. A method according to claim 38, comprising the steps of: where k is a positive integer greater than or equal to 0.   45. The method of claim 44, wherein k is equal to one. Determining whether the extended set of the control channel is present according to the detected downlink control information by the user apparatus, or the downlink control information detected by the user apparatus according to the detected downlink control information 46. The method of any one of claims 38-45, further comprising: determining a transmission mode of the extended set of control channels.   47. A method according to any one of claims 38 to 46, wherein the base set is present in all subframes comprising symbols used for downlink transmission.   48. A method according to any one of claims 38 to 47, wherein the extension set is not present in subframes carrying synchronization signals and / or system information. A method for transmitting information,
Determining the time frequency resource of the control channel by the base station;
Transmitting downlink control information by the base station based on the time frequency resource of the control channel. The steps of determining a time frequency resource of a control channel by a base station, and transmitting downlink control information by the base station based on the time frequency resource of the control channel,
Determining the time frequency resource of the first control channel by the base station;
Determining a time frequency resource of a second control channel by the base station;
Transmitting, by the base station, first downlink control information based on the time frequency resource of the first control channel;
Transmitting, by the base station, second downlink control information based on the time frequency resource of the second control channel.   51. The method of claim 50, wherein a symbol occupied by the time frequency resource of the first control channel is located before a symbol occupied by the time frequency resource of the second control channel. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the present invention starts with the symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are used to transmit the reference signal 52. A method according to claim 51, wherein the reference signal is used to demodulate the second control channel and / or data. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the invention starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second 52. The method of claim 51, wherein control channel and downlink data are multiplexed on a time frequency resource corresponding to the symbol after the symbol l _i-1 . Determining the time frequency resource of the first control channel by the base station; and determining the time frequency resource of the second control channel by the base station,
Determining the time frequency resource of the first control channel in a first subframe by the base station;
Determining by the base station the time frequency resources of the second control channel in the first subframe, the first subframe comprising a symbol used for downlink transmission, a guard, and Uplink transmission corresponding to a symbol included in the first subframe and used for uplink transmission, including a period GP and a symbol used for uplink transmission, is a hybrid automatic retransmission request acknowledgment HARQ- Downlink transmissions including ACK transmission, corresponding to symbols included in the first subframe and used for downlink transmission are downlink control transmission, downlink data transmission, and transmission of a first reference signal. Including and
The symbols included in the first subframe and used for downlink transmission are determined by the symbols occupied by the time frequency resource of the first control channel and the time frequency resource of the second control channel. 51. The method of claim 50, comprising: an occupied symbol.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + k + 1) th symbol in the first subframe, and k is greater than or equal to 1 A positive integer, and the (i + 1) th to the (i + k) th symbols in the first subframe are used to transmit a reference signal, the reference signal being the The (l-k1) th symbol to the lth symbol in the first subframe are used to demodulate two control channels and / or data, and the uplink transmission is performed in the first subframe. Symbol used in the first sub-frame, and l is a symbol used for 55. The method of claim 54, wherein the symbol number is k1 is a positive integer greater than or equal to one.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer of 1 or more, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe, or the second control The time frequency resource of the channel is located on a symbol after the ith symbol in the first subframe, and the second control channel and downlink data are in the first subframe. From the ith symbol to the time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and the first subframe The (i + k2 + 1) thin Bol is a guard period GP in the first subframe, and the (i + k2 + 2) th symbol to the lth symbol in the first subframe are in the first subframe. 55. The method of claim 54, wherein the symbol used for uplink transmission and l is the number of symbols included in the first subframe. Determining the time frequency resource of the first control channel by the base station; and determining the time frequency resource of the second control channel by the base station,
Determining by the base station the time frequency resource of the first control channel in a second subframe;
Determining by the base station that time frequency resources of the second control channel are not present in the second subframe, the second subframe being a symbol used for downlink transmission A downlink transmission corresponding to a symbol used for uplink transmission, including a guard period GP, and a symbol used for uplink transmission, and included in the second subframe and used for downlink control transmission Uplink transmission corresponding to a symbol included in the second subframe and used for uplink transmission includes transmission of the second reference signal, uplink data transmission, and uplink control transmission. 51. The method of claim 50, comprising.   A symbol included in the second subframe and used for downlink transmission is a first symbol in the second subframe, and the time frequency resource of the first control channel is the first symbol. 58. The method of claim 57, wherein the first symbol in two subframes is occupied.   The method according to any one of claims 50 to 58, wherein the first downlink control information comprises information on the time frequency resource of the second control channel. The first downlink control information may be carried in subframe n, and the second control channel may be carried in subframe n, or the first downlink control information may be subframe n and the second control channel is carried in subframe n + 1,
60. The method of claim 59, wherein n is a positive integer. Further comprising transmitting the downlink shared channel by the base station;
The first downlink control information includes the information on the time frequency resource of the second downlink control channel and / or the information on the time frequency resource of the downlink shared channel,
61. The method according to any one of claims 50 to 60, wherein the second downlink control information comprises modulation and coding information of the downlink shared channel.   Transmitting a reference signal on the time frequency resource of the first control channel by the base station, the reference signal being used to demodulate the first control channel. 62. A method according to any one of claims 50 to 61, comprising.   Transmitting, by the base station, downlink control signaling, wherein the downlink control signaling is used to determine a time frequency resource of the control channel in a subframe n, the subframe n being synchronized 50. The method of claim 49, further comprising the step of not conveying signals and / or system information, n being an integer greater than or equal to zero. The step of transmitting downlink control information signaling by the base station comprises:
64. The method of claim 63, comprising transmitting the downlink control signaling in a subframe nk by the base station, k being an integer greater than or equal to zero.   65. The method of claim 64, wherein k is equal to one. The step of determining the time frequency resource of the control channel by the base station comprises
Determining the time frequency resource of the control channel in subframe n according to a predefined rule by the base station,
50. The method of claim 49, wherein the subframe n carries synchronization signals and / or system information. The control channel includes control channel set 1, and the step of determining the time frequency resource of the control channel by the base station comprises:
Determining, by the base station, a time frequency resource of the control channel set 1;
The method is
50. The method of claim 49, further comprising: transmitting, by the base station, the control channel based on the time frequency resource of the control channel set 1 by using a distributed transmission mode. The control channel includes a control channel set 1 and a control channel set 2, and determining a time frequency resource of the control channel by the base station is:
Determining the time frequency resource of the control channel set 1 by the base station;
Determining, by the base station, time-frequency resources of the control channel set 2, the control channels in the control channel set 1 using a distributed transmission mode, and the control channels in the control channel set 2. 50. The method of claim 49, wherein the control channel uses a localized transmission mode.   Transmitting, by the base station, downlink control information in subframe n, the downlink control information including information on time frequency resources of the control channel set 1 in subframe n + k; 69. The method of claim 68, further comprising the steps of n is an integer and k is a positive integer greater than or equal to one. The steps of determining a time frequency resource of a control channel by a base station, and transmitting downlink control information by the base station based on the time frequency resource of the control channel,
Determining by the base station time-frequency resources of the basic set of control channels;
Transmitting, by the base station, the downlink control information based on the time-frequency resources of the basic set, wherein the downlink control information comprises information about time-frequency resources of the extended set of control channels; 50. The method of claim 49, comprising:   71. The method of claim 70, further comprising the step of transmitting system information by the base station, the system information including information about the time frequency resources of the base set of control channels. Specifically, the system information includes information about the time frequency resource of the basic set of control channels;
The system information comprises information on the number of symbols occupied by the time frequency resource of the basic set of control channels, or the system information is occupied by the time frequency resources of the basic set of control channel 72. The system according to claim 71, wherein the information on the number of physical resource blocks is included, or the system information includes information on the number of control channel elements CCE corresponding to the time frequency resource of the basic set of control channels. the method of. Determining, by the base station, time frequency resources of the basic set of control channels;
71. The method according to claim 70, comprising determining, by the base station, the time frequency resources of the base set of the control channel according to preset rules.   73. The method of claim 72, wherein the pre-set rule is that the time frequency resources of the base set of control channels occupy one symbol. Transmitting, by the base station, downlink control information based on the time-frequency resources of the basic set, the downlink control information including information on time-frequency resources of the extended set of control channels , Step,
Transmitting, by the base station, the downlink control information based on the time-frequency resource of the basic set in subframe n, the downlink control information comprising the control in subframe n + k Including information about time frequency resources of said extended set of channels, including
71. The method of claim 70, wherein n is an integer and k is a positive integer greater than or equal to zero.   76. The method of claim 75, wherein the value of k is equal to one. The downlink control information includes information indicating whether the extension set of the control channel exists, or the downlink control information is information indicating a transmission mode corresponding to the extension set of the control channel 78. The method of any one of claims 70-76, comprising   78. The method according to any one of claims 70 to 77, wherein the base set is present in all subframes including symbols used for downlink transmission.   79. The method according to any one of claims 70 to 78, wherein the extension set is not present in a sub-frame carrying synchronization signals and / or system information. A device used as a first device,
A determination module determined to determine the position of the reference signal;
A transceiver module configured to transmit or receive the reference signal based on the determined position of the reference signal.   The reference signal includes a first reference signal and a second reference signal, the determination module determines the position of the first reference signal, and the first reference signal is used for downlink data demodulation Determining the position of the second reference signal, the second reference signal is used for uplink data demodulation, and the time domain position of the first reference signal is the time of the second reference signal 81. The device of claim 80, wherein the device is specifically configured to be the same as a domain location.   82. The device of claim 81, wherein a frequency domain position of the first reference signal is the same as a frequency domain position of the second reference signal.   The first reference signal is conveyed in a first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit, The second reference signal is carried in a second transmission unit, and the position of the second reference signal is the position of the second reference signal in the second transmission unit, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal, specifically, the time domain position of the first reference signal in the first transmission unit is the Being the same as the time domain position of the second reference signal in two transmission units, and the duration corresponding to the first transmission unit is equal to the duration corresponding to the second transmission unit 82. A device according to claim 81.   The first reference signal is conveyed in a first transmission unit, and the position of the first reference signal is the position of the first reference signal in the first transmission unit, The second reference signal is carried in a second transmission unit, and the position of the second reference signal is the position of the second reference signal in the second transmission unit, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first transmission unit is within the second transmission unit And the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal. Frequency domain position of the first reference signal within a transmission unit of The same as the frequency domain position of the second reference signal in the second transmission unit, and the duration corresponding to the first transmission unit is the duration corresponding to the second transmission unit 83. The device of claim 82, which is equal to   The first reference signal is located on a third symbol in the first transmission unit, and the second reference signal is located on a third symbol in the second transmission unit. 85. A device according to claim 83 or 84.   The first reference signal is carried in a first sub-frame, and the position of the first reference signal is the position of the first reference signal in the first sub-frame; 2 reference signals are carried in a second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is within the second subframe And the number of symbols used for downlink transmission in the first subframe is the same as the time domain position of the second reference signal in the first subframe. More than the number of symbols used It said second number of symbols used for downlink transmission in a subframe, the is smaller than the second number of symbols used for uplink transmission in the sub-frame, the device according to claim 81.   The first reference signal is carried in a first sub-frame, and the position of the first reference signal is the position of the first reference signal in the first sub-frame; 2 reference signals are carried in a second subframe, and the position of the second reference signal is the position of the second reference signal in the second subframe, the first That the time domain position of the reference signal is the same as the time domain position of the second reference signal means that the time domain position of the first reference signal in the first subframe is within the second subframe And the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal. Said first in a sub-frame of The frequency domain position of the reference signal is the same as the frequency domain position of the second reference signal in the second subframe, and the number of symbols used for downlink transmission in the first subframe Is greater than the number of symbols used for uplink transmission in the first subframe, and the number of symbols used for downlink transmission in the second subframe is uplink in the second subframe 83. The device of claim 82, wherein the device is less than the number of symbols used for link transmission.   The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and used for uplink transmission Uplink transmissions corresponding to selected symbols include hybrid automatic repeat request acknowledgment ACK-ACK transmissions, and downlink transmissions corresponding to symbols contained in the first subframe and used for downlink transmissions are: The second sub-frame includes a downlink control transmission, a downlink data transmission, and the transmission of the first reference signal, and the second subframe includes a symbol used for the downlink transmission, a guard period GP, and an uplink transmission. Downlink transmission corresponding to the symbols included in the second subframe and used for downlink transmission, Uplink transmission, including link control transmission, corresponding to a symbol included in the second subframe and used for uplink transmission, includes uplink control transmission, uplink data transmission, and the second reference signal. 88. A device according to claim 86 or 87, including transmission of   The first subframe starts with a symbol included in the first subframe and used for downlink transmission, and ends with a symbol included in the first subframe and used for uplink transmission, The second subframe starts with a symbol included in the second subframe and used for downlink transmission, and ends with a symbol included in the second subframe and used for uplink transmission. 89. The device of claim 88.   Specifically, the time domain position of the first reference signal in the first subframe is the same as the time domain position of the second reference signal in the second subframe. The index of the symbol occupied by the first reference signal in the first subframe is the same as the index of the symbol occupied by the second reference signal in the second subframe, 90. A device according to any one of claims 86 to 89.   The first reference signal is located on a third symbol in the first subframe, and the second reference signal is located on a third symbol in the second subframe. 90. The device of claim 89.   The first device is a user equipment, and the transceiver module receives the first reference signal based on the position of the first reference signal, and at the position of the second reference signal 92. The device according to any one of claims 81 to 91, which is specifically configured to transmit the second reference signal based thereon. The first device is a base station, and the transceiver module transmits the first reference signal based on the position of the first reference signal, and at the position of the second reference signal 92. The device according to any one of claims 81 to 91, which is specifically configured to receive the second reference signal based thereon. A determination module configured to determine a time frequency resource of the control channel;
A receiver module configured to receive downlink control information based on the time frequency resource of the control channel. The determination module is specifically configured to determine a time frequency resource of the first control channel and to determine a time frequency resource of the second control channel;
The receiving module detects first downlink control information based on the time frequency resource of the first control channel, and a second downlink based on the time frequency resource of the second control channel. 95. The user equipment according to claim 94, which is specifically configured to detect link control information.   The user equipment according to claim 95, wherein a symbol occupied by the time frequency resource of the first control channel is located before a symbol occupied by the time frequency resource of the second control channel. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the present invention starts with the symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are used to transmit the reference signal 97. A user equipment as claimed in claim 96, wherein the reference signal is used to demodulate the second control channel and / or data. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the invention starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second 99. The user equipment according to claim 96, wherein control channel and downlink data are multiplexed on a time frequency resource corresponding to the symbol after the symbol l _i-1 .   The determination module is specifically configured to determine a time frequency resource of the first control channel in a first subframe and to determine a time frequency resource of the second control channel in the first subframe. The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and The uplink transmission corresponding to the symbol used for uplink transmission includes hybrid automatic retransmission request acknowledgment affirmation HARQ-ACK transmission and corresponds to the symbol contained in the first subframe and used for downlink transmission The downlink transmission includes downlink control transmission, downlink data transmission, and transmission of a first reference signal, and is included in the first subframe. And symbols used for downlink transmission include symbols occupied by the time frequency resource of the first control channel and symbols occupied by the time frequency resource of the second control channel. 96. A user equipment according to claim 95.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + k + 1) th symbol in the first subframe, and k is greater than or equal to 1 A positive integer, and the (i + 1) th to the (i + k) th symbols in the first subframe are used to transmit a reference signal, the reference signal being the The (l-k1) th symbol to the lth symbol in the first subframe are used to demodulate two control channels and / or data, and the uplink transmission is performed in the first subframe. Symbol used in the first sub-frame, and l is a symbol used for 100. The user equipment according to claim 99, wherein it is a symbol number, and k1 is a positive integer of 1 or more.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer of 1 or more, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe, or the second control The time frequency resource of the channel is located on a symbol after the ith symbol in the first subframe, and the second control channel and downlink data are in the first subframe. From the ith symbol to the time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and the first subframe The (i + k2 + 1) thin Bol is a guard period GP in the first subframe, and the (i + k2 + 2) th symbol to the lth symbol in the first subframe are in the first subframe. 100. The user equipment according to claim 99, wherein the symbol is a symbol used for uplink transmission, and l is the number of symbols included in the first subframe.   The determination module determines a time frequency resource of the first control channel in a second subframe and determines that a time frequency resource of the second control channel is not present in the second subframe. Specifically, the second sub-frame includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and the second sub-frame is configured in the second sub-frame. Downlink transmission corresponding to a symbol included and used for downlink transmission includes downlink control transmission, and uplink transmission corresponding to a symbol included in the second subframe and used for uplink transmission 96. The user equipment according to claim 95, comprising: transmission of the second reference signal, uplink data transmission, and uplink control transmission.   A symbol included in the second subframe and used for downlink transmission is a first symbol in the second subframe, and the time frequency resource of the first control channel is the first symbol. 103. The user equipment according to claim 102, wherein it occupies the first symbol in two subframes.   The decision module is further configured to determine the time frequency resource of the second control channel according to the first downlink control information. User equipment. The first downlink control information may be carried in subframe n, and the second control channel may be carried in subframe n, or the first downlink control information may be subframe n and the second control channel is carried in subframe n + 1,
105. The user equipment according to claim 104, wherein n is a positive integer.   The receiving module is further configured to receive a downlink shared channel according to the first downlink control information and the second downlink control information, the first downlink control information being And / or information on time and frequency resources of the downlink shared channel, wherein the second downlink control information includes modulation and code of the downlink shared channel. 106. A user equipment as claimed in any one of claims 95 to 105, comprising   107. A user equipment as claimed in any of claims 95 to 106, wherein the first control channel is demodulated according to a reference signal carried on the time frequency resource of the first control channel.   The determination module is specifically configured to determine a time frequency resource of the control channel in a subframe n, and when the subframe n belongs to a subframe set 1, the determination module is preset According to the rule, the time frequency resource of the control channel in the subframe n is determined, or when the subframe n belongs to the subframe set 2, the determination module determines the subframe according to downlink control signaling. determining the time frequency resources of the control channel in n, the subframe set 1 comprises subframes carrying synchronization signals and / or system information, and the subframe set 2 comprises synchronization signals and / or systems No sub-frames carrying information, n is an integer greater than or equal to 0 The user equipment of claim 94.   The determination module is specifically configured to determine the time frequency resource of the control channel in the subframe n according to the downlink control signaling carried in the subframe nk, where k is an integer greater than or equal to 0 109. A user equipment according to claim 108, wherein the user equipment.   The determination module is specifically configured to determine the time frequency resource of the control channel in the subframe n according to downlink control signaling carried in the subframe n−1. User equipment described in.   109. The user equipment according to claim 108, wherein the time frequency resource of the control channel in the subframe n occupies two symbols in time domain.   The control channel comprises a control channel set 1 and the determination module is specifically configured to determine the time frequency resource of the control channel set 1, the control channels in the control channel set 1 being distributed 95. A user equipment according to claim 94, which uses a type transmission mode.   The control channel includes a control channel set 1 and a control channel set 2, and the determination module determines a time frequency resource of the control channel set 1, and specifically determines a time frequency resource of the control channel set 2. 95, wherein the control channels in the control channel set 1 use distributed transmission mode and the control channels in the control channel set 2 use localized transmission mode User equipment.   The determination module detects downlink control information in subframe n, and according to the downlink control information detected in subframe n, a time frequency resource of control channel set 1 in subframe n + k 114. The user equipment according to claim 113, further configured to: determine n, wherein n is an integer and k is a positive integer greater than or equal to one.   The determination module is further configured to determine a time frequency resource of the control channel set 2 in the subframe n + k based on the time frequency resource of the control channel set 1 in the subframe n + k. 115. A user equipment according to claim 114, configured.   116. A user equipment as claimed in any one of claims 113 to 115, wherein subframes carrying said control channel do not carry synchronization signals and / or system information.   The determination module determines time-frequency resources of a basic set of control channels, detects the downlink control information based on the time-frequency resources of the basic set, and according to the detected downlink control information 95. The user equipment according to claim 94, which is specifically configured to determine time frequency resources of the extended set of control channels.   The receiving module is further configured to receive system information, and the determining module is further configured to determine the time frequency resource of the base set of the control channel according to the system information. 117. The user equipment according to 117.   The determination module determines the number of symbols occupied by the time frequency resource of the basic set of control channels according to the system information, or the time frequency of the basic set of control channels according to the system information It is further configured to determine the number of physical resource blocks occupied by resources or to determine the number of control channel elements CCE corresponding to the time frequency resource of the basic set of control channels according to the system information. 119. A user equipment according to claim 118.   118. The user equipment according to claim 117, wherein the determination module is specifically configured to determine the time frequency resource of the base set of the control channel according to a preset rule.   121. The user equipment according to claim 120, wherein the preset rule is that the time frequency resource of the base set of the control channel occupies one symbol. The receiving module is further configured to receive system information;
The determination module determines, according to the system information, the number of physical resource blocks occupied by the time frequency resource of the basic set of the control channel, or a control channel element corresponding to the time frequency resource of the basic set of the control channel 120. A user equipment according to claim 117, configured to determine a number and to specifically determine the number of symbols occupied by the time frequency resource of the control channel according to predefined rules. A detection module configured to detect the downlink control information based on the base set of time frequency resources in subframe n;
The determination module is specifically configured to determine a time frequency resource of the extension set of the control channel in subframe n + k according to the downlink control information detected in the subframe n; 118. The user equipment according to claim 117, wherein n is an integer and k is a positive integer greater than or equal to zero.   124. A user equipment according to claim 123, wherein the value of k is equal to one.   The determination module determines whether the extension set of the control channel is present according to the detected downlink control information, or the extension of the control channel according to the detected downlink control information 125. A user equipment according to any of the claims 117 to 124, further configured to determine a transmission mode corresponding to a set.   The user equipment according to any one of claims 117 to 125, wherein the basic set is present in all subframes including symbols used for downlink transmission.   127. A user equipment as claimed in any one of claims 117 to 126, wherein the extension set is not present in subframes carrying synchronization signals and / or system information. A determination module configured to determine a time frequency resource of the control channel;
A transmitting module configured to transmit downlink control information based on the time frequency resource of the control channel.   The determination module is specifically configured to determine a time frequency resource of a first control channel and to determine a time frequency resource of a second control channel, and the transmission module is of the first control channel. Specifically configured to transmit first downlink control information based on the time frequency resource and to transmit second downlink control information based on the time frequency resource of the second control channel 129. The base station of claim 128, wherein:   130. The base station of claim 129, wherein a symbol occupied by the time frequency resource of the first control channel is located before a symbol occupied by the time frequency resource of the second control channel. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the present invention starts with the symbol l _{i + k} , k is a positive integer greater than or equal to 1 and symbols l _i to l _{i + k−1} are used to transmit the reference signal 131. The base station of claim 130, wherein the reference signal is used to demodulate the second control channel and / or data. The time frequency resource of the first control channel occupies i symbols corresponding to symbols l ₀ ,..., L _i−1 , i is a positive integer greater than or equal to 1 and the second The time-frequency resource of the control channel of the invention starts with the symbol l _i , or the time-frequency resource of the second control channel is located on the symbol after the symbol l _i-1 and the second 131. The base station of claim 130, wherein control channel and downlink data are multiplexed on a time frequency resource corresponding to the symbol after the symbol l _i-1 .   The determination module is specifically configured to determine a time frequency resource of the first control channel in a first subframe and to determine a time frequency resource of the second control channel in the first subframe. The first subframe includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and is included in the first subframe and The uplink transmission corresponding to the symbol used for uplink transmission includes hybrid automatic retransmission request acknowledgment affirmation HARQ-ACK transmission and corresponds to the symbol contained in the first subframe and used for downlink transmission The downlink transmission includes downlink control transmission, downlink data transmission, and transmission of a first reference signal, and is included in the first subframe. And symbols used for downlink transmission include symbols occupied by the time frequency resource of the first control channel and symbols occupied by the time frequency resource of the second control channel. 131. The base station of claim 129.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer greater than or equal to 1, and the time frequency resource of the second control channel starts with the (i + k + 1) th symbol in the first subframe, and k is greater than or equal to 1 A positive integer, and the (i + 1) th to the (i + k) th symbols in the first subframe are used to transmit a reference signal, the reference signal being the The (l-k1) th symbol to the lth symbol in the first subframe are used to demodulate two control channels and / or data, and the uplink transmission is performed in the first subframe. Symbol used in the first sub-frame, and l is a symbol used for 134. The base station of claim 133, wherein the base station is a symbol number and k1 is a positive integer greater than or equal to one.   The time frequency resources of the first control channel occupy i symbols in the first subframe, corresponding to the first symbol to the i th symbol in the first subframe, i is a positive integer of 1 or more, and the time frequency resource of the second control channel starts with the (i + 1) th symbol in the first subframe, or the second control The time frequency resource of the channel is located on a symbol after the ith symbol in the first subframe, and the second control channel and downlink data are in the first subframe. From the ith symbol to the time frequency resource corresponding to the (i + k2) symbol in the first subframe, k2 is a positive integer greater than 1 and the first subframe The (i + k2 + 1) thin Bol is a guard period GP in the first subframe, and the (i + k2 + 2) th symbol to the lth symbol in the first subframe are in the first subframe. 134. The base station of claim 133, wherein the symbol is used for uplink transmission and l is the number of symbols included in the first subframe.   The determination module determines a time frequency resource of the first control channel in a second subframe and determines that a time frequency resource of the second control channel is not present in the second subframe. Specifically, the second sub-frame includes a symbol used for downlink transmission, a guard period GP, and a symbol used for uplink transmission, and the second sub-frame is configured in the second sub-frame. Downlink transmission corresponding to a symbol included and used for downlink transmission includes downlink control transmission, and uplink transmission corresponding to a symbol included in the second subframe and used for uplink transmission 130. The base station of claim 129, comprising: transmission of the second reference signal, uplink data transmission, and uplink control transmission.   A symbol included in the second subframe and used for downlink transmission is a first symbol in the second subframe, and the time frequency resource of the first control channel is the first symbol. 137. The base station of claim 136, wherein the base station occupies the first symbol in two subframes.   The base station according to any one of claims 129 to 137, wherein the first downlink control information includes information on the time frequency resource of the second control channel.   The first downlink control information may be carried in subframe n and the second control channel may be carried in subframe n or the first downlink control information may be subframe 139. The base station of claim 138, carried in n, the second control channel is carried in subframe n + 1, and n is a positive integer.   The transmission module is further configured to transmit a downlink shared channel, and the first downlink control information is information and / or the information on the time frequency resource of the second downlink control channel. 140. A method according to any one of claims 129 to 139, comprising information on time and frequency resources of a link shared channel, and wherein the second downlink control information comprises modulation and coding information of the downlink shared channel. Base station.   The transmission module is further configured to transmit a reference signal on the time frequency resource of the first control channel, the reference signal being used to demodulate the first control channel. The base station according to any one of Items 129 to 140.   The transmission module is further configured to transmit downlink control signaling, wherein the downlink control signaling is used to determine a time frequency resource of the control channel in subframe n, the subframe n being 129. The base station of claim 128, which does not carry synchronization signals and / or system information and n is an integer greater than or equal to zero.   143. The base station of claim 142, wherein the transmission module is further configured to transmit the downlink control signaling in subframe nk, wherein k is an integer greater than or equal to zero.   147. The base station of claim 143, wherein k is equal to one.   The determination module is specifically configured to determine time-frequency resources of the control channel in subframe n according to predefined rules, the subframe n carrying synchronization signals and / or system information 129. The base station of claim 128, wherein   The control channel includes control channel set 1, the determination module is specifically configured to determine time-frequency resources of the control channel set 1, and the transmission module uses a distributed transmission mode. 129. The base station of claim 128, further configured to transmit the control channel based on the time frequency resource of the control channel set 1.   The control channel includes a control channel set 1 and a control channel set 2, and the determination module determines a time frequency resource of the control channel set 1, and specifically determines a time frequency resource of the control channel set 2. 130, wherein the control channels in the control channel set 1 use a distributed transmission mode and the control channels in the control channel set 2 use a localized transmission mode. Base station.   The transmission module is further configured to transmit downlink control information in subframe n, the downlink control information including information on time frequency resources of the control channel set 1 in subframe n + k. The base station according to claim 147, wherein n is an integer and k is a positive integer of 1 or more.   The determination module is specifically configured to determine time frequency resources of a base set of the control channel, and the transmission module transmits the downlink control information based on the time frequency resources of the base set. 129. The base station of claim 128, wherein the base station is specifically configured to: the downlink control information includes information on time frequency resources of the extended set of control channels.   150. The base station of claim 149, wherein the transmission module is further configured to transmit system information, wherein the system information includes information about the time frequency resources of the base set of control channels.   The fact that the system information includes information about the time frequency resource of the basic set of control channels is more specifically a symbol in which the system information is occupied by the time frequency resources of the basic set of control channels Including information on the number, or wherein said system information includes information on the number of physical resource blocks occupied by said time frequency resource of said basic set of said control channel, or said system information includes said information of said control channel 151. The base station according to claim 150, comprising information on the number of control channel elements CCE corresponding to the basic set of time frequency resources.   150. The base station of claim 149, wherein the determination module is specifically configured to determine the time frequency resource of the base set of control channels according to preset rules.   152. The base station of claim 151, wherein the pre-set rule is that the time frequency resources of the base set of control channels occupy one symbol.   The transmission module is specifically configured to transmit the downlink control information based on the time-frequency resource of the basic set in subframe n, the downlink control information comprising subframe n + k 150. The base station of claim 149, comprising: information about time frequency resources of the extended set of the control channel, n being an integer and k being a positive integer greater than or equal to zero.   157. The base station of claim 154, wherein the value of k is equal to one.   The downlink control information includes information indicating whether the extension set of the control channel exists, or the downlink control information is information indicating a transmission mode corresponding to the extension set of the control channel 156. The base station of any one of claims 149-155, comprising:   The base station according to any one of claims 149 to 156, wherein the basic set is present in all subframes including symbols used for downlink transmission.   157. The base station of any one of claims 149-157, wherein the extension set is not in a subframe carrying synchronization signals and / or system information.

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